4-speed chatter problem

No my crank is not drilled for a standard trans. I originally bought a brass pilot bushing and machined it down to .913 to fit the crank and I had to cut 5/8" off the end of the pilot shaft on the trans for clearance in the crank. Then brewer told me that going with the bearing was a more "true" way to go on case the hole in the back of my automatic crank wasn't exactly centered. So I took out the brass bushing and installed the bearing.

That does not sound good.

I got a 833 once that had the pilot shaft cut and was terrible. My crank was right with the oilight bushing and had to get a new shaft.

Sounds like you do not have all the right components and maybe steering Brewer in the direction you want to hear. Perhaps you need to re-evaluate what you have and decide to fix your crank or go Auto.