Mbell, is the 'rubber spring' you're referring to, the gaitor / bellows?
I have a good white ball and with a hunk of teflon, I had a machine shop make another ball for me. Simple
stuff for a lathe operator (not me!). Hmmm, now that I'm thinking about, maybe I'll have him make several
more. I'm sure there are others who need this ball, too.
You're right about the sticks. They Sierra type 9 stick, with the 4 bolts for a hold down, instead of a
threaded socket, looks to be more abundant. Hence, my other thread about adapting said stick.
Any larger ball will take up the extra space to limit the up/down motion, although John C indicates that
motion is not the problem, but rather the left/right is.
As an aside, I'm trying to replicate the Alex Black V2 stick he fabbed up in this thread:
lotus-gearbox-f37/gearbox-swop-t21414-285.htmlI think I'm close and found, with all my pieces together, the up / down motion is very limited. I'm not sure
why but it seems to work.
Both he and John C have nice solutions to the dreaded stick sloppiness.