well nuts - After reading the comments, I think I need that spacer - adapter deal. When I remove the NDS crank arm, there's quite a bit play on the free end. I measured the spindle sticking out and it's about 21.5 or so. The little sleeve-spacer-adapter slips nicely over it and takes up the play.
But it's supposed to be INSIDE that external bearing. And I do not have the right size wrench for that thing - so I'll have to see if my LBS will re-loan me the tool. ugh. . . .
man! -- square taper for-ever!
i have never seen one of those reducers placed INSIDE the bearing assy, as in inserted from the inside... EVER.
it would tend to walk itself loose after a while.
i think we just found the problem.
IGNORE THAT BOGUS DRAWING, ok?
put the reducer in from The OUTSIDE this time, and give it a go.