I have two of these and really like them a lot. One of them I mostly use for playing with the v/o signal for a synced vco ... lots of interesting timbres there. However, the sweetspots are quite "narrow", and something like +/- 1V offset rather than +/- 5V would probably work better for my purpose. I assume it's simply a matter of replacing one or two resisters. But which? And to which values? Hints on this are much appreciated. Best wishes.