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@fizzy.bleach
a weird one
i'm trying to get a Campag Chorus rear mech (10-speed, 2nd gen, I think about 2007/8) to work with a Look 595 frame, also from around 2008 i think.
basically, the mech's higher limit screw, when cranked all the way in, places the jockey wheels just outboard of the smallest cog to the extend that the chain drops off when i turn the cranks. when i (manually) push the mech across the cassette to shift through the gears, it stops on the second-largest cog just kind of by itself, the lower limit screw isn't even touching.
technical docs for this generation of Campag are rare, but the more modern stuff says that it will only work if the distance between the outside of the dropout and the outer edge of the cassette is under 12.2mm. on my bike it's more like 15mm, so this all adds up.
i just find it almost impossible to believe that campag rear mechs are simply not compatible on frames with thick dropouts. i can't move the cassette outwards with a spacer because there's not really room.
googling gives me nothing, so i must be missing something obvious. anyone had anything remotely similar? longer limit screws might help, but if the mech's overall range won't cover the cassette then i'll have one cog out of action...