Buffalo said:For those of you with the rotating shifter discs, pop them out & on the underneath side, make some slices in it with a sharp knife. That will leave some rough edges that will provide traction for the disc when you re-install it.
I also put a very small drop of silicone on the ridge with the slices for added security that it would not rotate, again. It worked, for me.
Joe F. (Buffalo)