I hink the BB that caused this problem for me was a UN52 or UN53; I've
swapped over to the cheaper UN25 (and competitive units) as a result.


The BB I am using is a generic Chinhaur (or something like that).
After my post last night, I swapped it out for a new Shimano UN52 of
the same specs (68/110)...and found the same problem. Hmmm...maybe
I'll ask my LBS for a sample of the UN25.

I will note, however, that as long as the sprockets don't hit the
chainstay, there's no real problem with having the cranks off center
by an amount this small.

Part of the reason I'm concerned about the difference is that I plan on
'upgrading' my crankset to a 48-36-26 (still a Shimano crank w/square
taper)....and I am a bit concerned about clearance between the frame
and large ring. I'll probaby change the BB to a 113mm (still within
chainline recommendations).

Cheers,
Dave