Originally Posted by
dbakl
Why not just keep what cups you have? I'm not a French expert, I just tend to keep whatever came with the frame... As far as I know, other than cup threads, French and English use the same dimension spindles (at least in the Campagnolo stuff I usually work with).
Also, unless the frame is going to be painted, there's no reason to take out the fixed cup unless you're replacing it.
You just need to find a spindle that's made for thin cups or a spindle for an Italian BB.
I agree that it's better to leave the fixed cup in place.