I guess that you want to increase the fxlist and sendlist slots heights. There are two Walter commands for this, to be used in the rtconfig.txt file of the theme :
set mcp.fxlist.font [xf yf]
set mcp.sendlist.font [xs ys]
xf/xs : number of the WALTER font listed in the Theme development/tweaker window for, respectively, the fx slots and the sendlist ones.
yf/ys : in pixels, the height of, respectively, the fx slots and sendlist ones.
Strangely, these are not present in the Default_Analog_v1.8 rtconfig.txt file, which is why probably Reaper display the slots by default, at a minimalistic height of 14 pixels. So, I added these commands at the right places (I think...) to increase the slots heights to 21 pixels in the rtconfig.txt file that you can find in the attachment.
Just rename the original rtconfig.txt as something else (as a backup...) and add the one I have joined here. You can eventually find the modifications I did, searching for a ';--' string in a raw text editor and modify the height for something else than the 21 pixels stated.
Hope this will help...
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