Hey, thanks! That worked out great – exactly what I was looking for.
I’ve got pointers on my other EH effects (especially my prized 1978 IC Big Muff), figure I’d like to mix it up a bit.
You can use the MoogerFooger expression pedal – it’s a 100k. Wire up a 1/4″ jack to two of the three legs on the BM sustain pot, then use the MoogerFooger expression pedal to control the sustain.