[Paul Copioli]

What we have done for several years now is make a round part that fits into the octagonal hole and feeds all the way through to the back hole. We use either steel or aluminum and screw the round part through the slots in the octagonal part. It makes for a very strong connection and allows you to put a potentiometer on the back side. A picture says 1,000 words so I will find a picture in the next hour or so. I will send another post with this picture.

This connection held up even when we broke our output shaft at Chicago two years ago (sorry 93 and 107).

-Paul