Originally Posted by
fietsbob
since OP was not saying which Chorus ( a Model name retained for Decades) we Guess ..
OP stated 9-speed on a Litespeed. This places the date in the early to mid 90s. Chorus 7 and 8-speed used a 111mm spindle, both in the loose ball and first generation cartridge BBs. The first gen cart BBs from Campy were not serviceable.
The last generation of square-taper BBs from Campy are very nice. 102mm Chorus/Record and 111mm Centaur for the doubles. Lightweight, very well sealed, indefinitely serviceable and worth saving.
I'm having second thoughts about the OP's original problem. Chorus BBs should last many many thousands of miles before requiring any work. Is it possible that one of the cups has just loosened up, and need tightening? Like on the drive side of an Italian BB, which tends to loosen by itself?