My Logic "track expander tube" doesn't have "end tips" to grab! Whats up?

[kristen]

I posted this in Macrumors also but didn't get any answers yet so will try here as well.

Using Logic pro is difficult enough with a magic mouse (another thread) but to make matters worse the long skinny tube that I grab to move forward and backward has no "side tips". That the part of the horizontal "tube" you would grab to expand or shrink the detail. I have to go over to the slider to do this and it is a real pain in the ...."

The long horizontal tube I am referring is supposed to have "end tips" which you can grab to zoom in or out.

Is there some setting i need to do to get these "end tips" to show up?