Modular Synth Panels

I just finished building (and them significantly modifying) my CGS 
drum simulators.  I built a 3 tone model behind a 1U Stooge panel.

I have been looking at the panels here in the group and wonder if 
anyone has actually ever built one on these panel designs.  I say 
this because the two I see bring out the RES control which is 
normally a trimmer on the board.  My expereince is that this control 
has only a very small sweet spot and a front panel control would be 
touchy to useless unless one used a small pot in series with a 
resistor on each side once the known point was found.

Also, I did not see a panel where anyone is attempting the "tune" 
modification.  After implementing this, I have a whole new concept of 
how I would build my next CGS drum simulator package.

And finally, on my drum simulators the Lumex LEDs would hardly light 
up at all. I installed a modification that consists of one resistor 
and one common NPN transistor (about any will do) that fires the LED.

Since I see drum sim panels, I woudl be interested in hearing from 
others than have built theirs.

Larry Hendry