Funny you should say that... my 135mm is in an old Rapax shutter and when I got it it fired great at all speeds. My Synchro-Compur on the other hand was sticky, and has actually gone back to broken since it's been fixed. The Rapax was left in a cardboard box in some tech school somewhere, completely neglected and yet it worked great.

They don't make 'em like they used to I guess!