I looked into this again. I have two of those pedals. One new, one used. The new one never worked right so the model is based on the old one.
I got out the new and it just doesn't have any gain. So I got out the old one. Plenty of gain but low volume. Just figured that was as designed. Plugged in the new one again and started twisting the knobs and flipping the switches and all of a sudden it made a loud pop and now it has plenty of gain and volume.
Plugged in the old one and did the same thing but no difference. Wiggled the cable going into the output jack and the volume jumped for a second. Opened it up and touched up the solder joints around the output jack and now it has plenty of volume. It sounds different than the new one, better IMO.
So I've redone the model now based on the (fixed) old one.
I got out the new and it just doesn't have any gain. So I got out the old one. Plenty of gain but low volume. Just figured that was as designed. Plugged in the new one again and started twisting the knobs and flipping the switches and all of a sudden it made a loud pop and now it has plenty of gain and volume.
Plugged in the old one and did the same thing but no difference. Wiggled the cable going into the output jack and the volume jumped for a second. Opened it up and touched up the solder joints around the output jack and now it has plenty of volume. It sounds different than the new one, better IMO.
So I've redone the model now based on the (fixed) old one.