It wasn't that long ago and I can't remember how that little part works. It looks like 1/8" long piece of 1/8" diameter round stock. It drops into a hole and there is a ring that holds it out in place. ( I think, I am trying to remember) I never even knew it existed when I pulled mine apart. I took mine apart a diffewrnt way. I undid the four bolts that hold the shaft case and slid it back. Only when I was putting it back I saw the little piece. Oh! thsts what they were talking about.
I can't find my Bergman write up, I must have tossed it thinking, its always online. Does anyone have a hard copy
for bigpigtx? even a link. Maybe PM MR. Bergman himself.