I am trying to find a square taper shimano (to fit my rx-100 crankset) bottom bracket for my late 80s (?) Bianchi (model?), and it seems that no where in the Twin Cities is there a bike shop that stocks anything italian threaded (I know that is is italian threaded, it currently has a Dura-ace bb that is too wide for my crank). I thought it would be easy to track down online, but (unless I am being very dense, which is quite possible) I can't seem to find the 107 width that I need. Also, any idea if the Bianchi would have a 68 of 70 shell? I measured last night and I swear it was 69 (maybe I need a better ruler than the kids school ruler.) Thanks for any knowledge.
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