Originally Posted by
Chris Chicago
hmm. that is a detail I had not considered. though that lipless lockring is nearly the price of the bb itself.
I think it's likely that i didnt tighten the drive side well enough the first time. bc I observed the spindle moving in relationship to the adjustable cup/lockring. ie the nds lockring wasnt shifting with the spindle. but if the problem recurs, then I may go lipless.
If your nds cup has a lip then the 2 mm spacer probably caused the problem. BTW, there should be no need to buy a lipless nds cup new. Check around at older bike shops in their spares boxes or drawers. They should have saved the cups from replaced bottom brackets and might even give you one. The now discontinued UN-7X bottom brackets all had lipless metal nds cups.