My frame builder ran into a problem while putting together my bike with
FSA 165 cranks and campi chorus derailleur (I think there was a chain
drag or something like that). She is offering to install a shimano
ultegra derailleur with my otherwise campi chorus parts and says that
that will work fine. Some experienced cyclists in my life tell me it's
not a good idea to mix components like that. Your opinions would be
appriciated.
Thank you.