I must apologize, I misstated my solution. It turns out there are only 2 banks in the GR33, called Presets and User. My solution probably won't work for you.
You might find this useful if you revert back to trying Reabanks:
https://stash.reaper.fm/v/7453/Art_of_Reabanks.pdf
In case you want to look it over:
****Start****
.Patch Names
[Roland GR-33 Presets]
; Pianos
13= E42 Midi Piano
19= E54 Salsa & Piano
20= E61 Grand Piano
21= E62 Overdrive Piano
23= E64 Panning Rhodes Piano
24= E71 Bass & Rhodes
; Organs
7= E24 Elec. Organ / pedal
25= E72 Rock Organ
26= E73 Purple Organ
; Bass
9= E32 Fretless Bass
48= F51 Acoustic Bass
49= F52 Fingered Bass
50= F53 Slap Bass
51= F54 Deep Fretless Bass
52= F61 Guitarron Bass
53= F62 TB-303 Bass
54= F63 Pedal Bass
56= F71 Saw Yer Bass Synth
; Guitar
3= E14 GR-300 Lead
4= E21 12 String Guitar
12= E41 Nylon String Guitar
14= E43 Dist. Guitar
58= F73 Rock Lead
59= F74 Clean Tele Guit
60= F81 JC Strat Guit
61= F82 Steel String Guit
62= F83 Pedal Steel Min3rd Guit
63= F84 Flamenco Guit
83= G54 Digi Guitar Synth
; Ethnic
1= E12 Didgeridoo & Flute
15= E44 Elec Sitar
16= E51 Tabla & Sitar
17= E52 Didgeridoo & Pan Pipe
18= E53 Tabla & VoxKit
33= F12 Mizmar (Arab Clarinet)
64= G11 Sitar & Drone
65= G12 Shamisen
66= G13 Orient Express
; Pad
2= E13 Jangle Pad
8= E31 Romantic pad
10= E33 Daft Wave Pad
22= E63 Midi Pad keys
27= E74 Gothic Pad
67= G14 Planet Aminor Pad
79= G44 Bell Pad
80= G51 Air Bell pad
99= H14 Soundtrack Pad
100=H21 Total Eclipse Pad
103=H24 Hollow Pad
104=H31 Hybrid Pad w Gliss
105=H32 JP Soft Pad
106=H33 Floating Prologue Pad
110=H43 Orbit Shuffle Pad
111=H44 Step Flanger Pad
112=H51 Stobe Mode Pad
113=H52 Flying Gremlins Pad
114=H53 Oxygen Jar Pad
115=H54 Dyno Space Pad
116=H61 Molten Lava
117=H62 Nightmare Pad
119=H64 Cosmos (Bass & Pad)
120=H71 Spaceship Pad
; Strings
6= E23 GR Strings
11= E34 Cmaj-Strings
91= G74 Fiddle/Violin
92= G81 Hybrid Strings
93= G82 JP8 Strings
94= G83 Phaser Strings1
95= G84 Phaser Strings 2
; Flute
29= E82 Bamboo Flute
30= E83 Vox Flute
31= E84 Tin Whistle
32= F11 Blow Pipe
73= G32 Wichita Pipe
; Reed
28= E81 Accordion
34= F13 Harmonica
35= F14 Soprano Sax
36= F21 Alto Sax
37= F22 Breathy Tenor Sax
; Brass
38= F23 Trumpet
39= F24 Mute Trumpet
40= F31 French Horn Section
41= F32 Tenor Sax Section
42= F33 Trumpet + Tuba Section
43= F34 Tuba + Sax Section
44= F41 Oktoberfest (Tuba & Horns)
45= F42 Big Brass
46= F43 Huge Saw Brass
47= F44 Saw brass
; Synth
5= E22 303 Tekno
55= F64 Tekno Taurus Synth
57= F72 Pick Wah Synth
72= G31 SoftDigi Sweep Synth
74= G33 70s Saw Lead
75= G34 Brite Saw Lead
76= G41 Detuned Saws
77= G42 Sync Lead Sweep
78= G43 OD Synth Lead
81= G52 Wire Strings Synth
82= G53 Nasty Keys Synth
84= G61 Digi Saw
85= G62 Blaster Octave Synth
86= G63 150 BPM Synth
101=H22 Sweeping Saw
102=H23 Deep Sweep Saw
107=H34 Conqueror Saw
109=H42 Pulsater
118=H63 Filter Dance
; Bells
68= G21 Tubular Bells
69= G22 Angel Bells
70= G23 Asian Bells
; Voice
0= E11 Jazz Scat
96= H11 Choir
97= H12 Gregorian Chant
98= H13 LFO Vox
108=H41 Digi 'Doo' Choir
122=H73 Human Vox Drums
; Hits
87= G64 Tape stop
88= G71 Philly Hit
89= G72 Ultimate Hit
90= G73 Orch Hit
; Percussion
71= G24 Steel Drum
121=H72 All Wound Up (Flanged Drums)
123=H74 Percussion Kit
124=H81 Gamelan Kit
125=H82 Industrial Kit
126=H83 Tribal Drums
127=H84 Drum Kit
[Roland GR-33 User Bank]
; Pianos
13= A42 Midi Piano
19= A54 Salsa & Piano
20= A61 Grand Piano
21= A62 Overdrive Piano
23= A64 Panning Rhodes Piano
24= A71 Bass & Rhodes
; Organs
7= A24 Elec. Organ / pedal
25= A72 Rock Organ
26= A73 Purple Organ
; Bass
9= A32 Fretless Bass
48= B51 Acoustic Bass
49= B52 Fingered Bass
50= B53 Slap Bass
51= B54 Deep Fretless Bass
52= B61 Guitarron Bass
53= B62 TB-303 Bass
54= B63 Pedal Bass
56= B71 Saw Yer Bass Synth
; Guitar
3= A14 GR-300 Lead
4= A21 12 String Guitar
12= A41 Nylon String Guitar
14= A43 Dist. Guitar
58= B73 Rock Lead
59= B74 Clean Tele Guit
60= B81 JC Strat Guit
61= B82 Steel String Guit
62= B83 Pedal Steel Min3rd Guit
63= B84 Flamenco Guit
83= C54 Digi Guitar Synth
; Ethnic
1= A12 Didgeridoo & Flute
15= A44 Elec Sitar
16= A51 Tabla & Sitar
17= A52 Didgeridoo & Pan Pipe
18= A53 Tabla & VoxKit
33= B12 Mizmar (Arab Clarinet)
64= C11 Sitar & Drone
65= C12 Shamisen
; Pad
66= C13 Orient Express
2= A13 Jangle Pad
8= A31 Romantic pad
10= A33 Daft Wave Pad
22= A63 Midi Pad keys
27= A74 Gothic Pad
67= C14 Planet Aminor Pad
79= C44 Bell Pad
80= C51 Air Bell pad
99= D14 Soundtrack Pad
100=D21 Total Eclipse Pad
103=D24 Hollow Pad
104=D31 Hybrid Pad w Gliss
105=D32 JP Soft Pad
106=D33 Floating Prologue Pad
110=D43 Orbit Shuffle Pad
111=D44 Step Flanger Pad
112=D51 Stobe Mode Pad
113=D52 Flying Gremlins Pad
114=D53 Oxygen Jar Pad
115=D54 Dyno Space Pad
116=D61 Molten Lava
117=D62 Nightmare Pad
119=D64 Cosmos (Bass & Pad)
120=D71 Spaceship Pad
; Strings
6= A23 GR Strings
11= A34 Cmaj-Strings
91= C74 Fiddle/Violin
92= C81 Hybrid Strings
93= C82 JP8 Strings
94= C83 Phaser Strings1
95= C84 Phaser Strings 2
; Flute
29= A82 Bamboo Flute
30= A83 Vox Flute
31= A84 Tin Whistle
32= B11 Blow Pipe
73= C32 Wichita Pipe
; Reed
28= A81 Accordion
34= B13 Harmonica
35= B14 Soprano Sax
36= B21 Alto Sax
37= B22 Breathy Tenor Sax
; Brass
38= B23 Trumpet
39= B24 Mute Trumpet
40= B31 French Horn Section
41= B32 Tenor Sax Section
42= B33 Trumpet + Tuba Section
43= B34 Tuba + Sax Section
44= B41 Oktoberfest (Tuba & Horns)
45= B42 Big Brass
46= B43 Huge Saw Brass
47= B44 Saw brass
; Synth
5= A22 303 Tekno
55= B64 Tekno Taurus Synth
57= B72 Pick Wah Synth
72= C31 SoftDigi Sweep Synth
74= C33 70s Saw Lead
75= C34 Brite Saw Lead
76= C41 Detuned Saws
77= C42 Sync Lead Sweep
78= C43 OD Synth Lead
81= C52 Wire Strings Synth
82= C53 Nasty Keys Synth
84= C61 Digi Saw
85= C62 Blaster Octave Synth
86= C63 150 BPM Synth
101=D22 Sweeping Saw
102=D23 Deep Sweep Saw
107=D34 Conqueror Saw
109=D42 Pulsater
118=D63 Filter Dance
; Bells
68= C21 Tubular Bells
69= C22 Angel Bells
70= C23 Asian Bells
; Voice
0= A11 Jazz Scat
96= D11 Choir
97= D12 Gregorian Chant
98= D13 LFO Vox
108=D41 Digi 'Doo' Choir
122=D73 Human Vox Drums
; Hits
87= C64 Tape stop
88= C71 Philly Hit
89= C72 Ultimate Hit
90= C73 Orch Hit
; Percussion
71= C24 Steel Drum
121=D72 All Wound Up (Flanged Drums)
123=D74 Percussion Kit
124=D81 Gamelan Kit
125=D82 Industrial Kit
126=D83 Tribal Drums
127=D84 Drum Kit
; ----------------------------------------------------------------------
.Note Names
; ----------------------------------------------------------------------
; ----------------------------------------------------------------------
; The Controller Names Section was added by Cristóbal de Jesús (Toby)
; ----------------------------------------------------------------------
.Controller Names
[Roland GR-33 Controllers]
0=0-Bank Select
1=1-Modulation
2=2-Assignable to EXP pedal
3=3-Assignable to EXP pedal
4=4-Foot type
5=5-Assignable to EXP pedal
6=6-Data Entry (transm only)
7=7-Volume
8=8-Assignable to EXP pedal
9=9-Assignable to EXP pedal
10=10-Panpot
11=11-Assignable to EXP pedal
12=12-Assignable to EXP pedal
13=13-Assignable to EXP pedal
14=14-Assignable to EXP pedal
15=15-Assignable to EXP pedal
16=16-Assignable to EXP pedal
17=17-Harmony Key (GP2)
18=18-Envelope 1/2 (GP3)
19=19-WAH Pedal (GP4)
20=20-Assignable to EXP pedal
21=21-Assignable to EXP pedal
22=22-Assignable to EXP pedal
23=23-Assignable to EXP pedal
24=24-Assignable to EXP pedal
25=25-Assignable to EXP pedal
26=26-Assignable to EXP pedal
27=27-Assignable to EXP pedal
28=28-Assignable to EXP pedal
29=29-Assignable to EXP pedal
30=30-Assignable to EXP pedal
31=31-Assignable to EXP pedal
32=32-Bank Select
38=38-Data Entry (transmit only)
64=64 Hold 1 (receive only)
65=65-Assignable to EXP pedal
66=66-Assignable to EXP pedal
67=67-Assignable to EXP pedal
68=68-Assignable to EXP pedal
69=69-Assignable to EXP pedal
70=70-Assignable to EXP pedal
71=71-Assignable to EXP pedal
72=72-Assignable to EXP pedal
73=73-Assignable to EXP pedal
74=74-Assignable to EXP pedal
75=75-Assignable to EXP pedal
76=76-Assignable to EXP pedal
77=77-Assignable to EXP pedal
78=78-Assignable to EXP pedal
79=79-Assignable to EXP pedal
80=80-Tap Tempo Teach
81=81-CTRL pedal (GP6)
82=82-HOLD pedal (GP7)
83=83-Arpeggio Hold (GP8)
84=84-Assignable to EXP pedal
85=85-Assignable to EXP pedal
86=86-Assignable to EXP pedal
87=87-Assignable to EXP pedal
88=88-Assignable to EXP pedal
89=89-Assignable to EXP pedal
90=90-Assignable to EXP pedal
91=91-Effect 1 (Reverb Send Lvl)
92=92-Assignable to EXP pedal
93=93-Effect 3 (Chorus Send Lvl)
94=94-Assignable to EXP pedal
95=95-Assignable to EXP pedal
100=RPN LSB (PBend Sens only)
101=RPN MSB (PBend Sens only)
; ----------------------------------------------------------------------
; ----------------------------------------------------------------------
; The RPN Names Section was added by Cristóbal de Jesús (Toby)
; ----------------------------------------------------------------------
.RPN Names
[Roland GR-33 RPN]
0=Pitch Bend Sensitivity
; ----------------------------------------------------------------------
.Instrument Definitions
[Roland GR-33]
BankSelMethod=1
Control=Roland GR-33 Controllers
RPN=Roland GR-33 RPN
Patch[0]=Roland GR-33 User Bank
Patch[1]=Roland GR-33 Presets
Patch[*]=Roland GR-33 Presets
Key[*,*]=Diatonic
***end***