is there any way that you can control the self oscillation so that you can roll the peak off before it starts to shred your cabinet apart and your ears? can you do this with say an expression pedal mod? so that you can control the rate and set an extent of where the rate mod will start and end? (treadle beginning and end)

is this possible? i was thinking about that atari mod that expancolin made...and having a long enough cable to run out of an analog delay and tape it to my guitar or my guitar strap...so that when i wanted self oscillation...push the joystick and voila!!! and when i wanted it to stop oscillating leave go! and itll stop at the center.

so really i guess this is directed to colin. or anyone else who has the answer. and yes when i purchase my dod fx 90 i want this mod done.