Campagnolo Record 8 Speed Titanium Issues

thanks malaysian.
they tried an 8 speed kmc chain they had first. the advise i was given was that although a 9 speed chain on 8 speed cogs isn't perfect - it wouldn't be a big issue.

They were wrong.

5-8 speed chains are all the same width, 9 speed is narrower and 10 speed narrower again.

If it was Shimano then 8speed shifter 9 speed mech and 8 speed cassette (there's no difference in 8,9 or 10 speed hubs, only 7 speed are narrower) would be fine as the shifters and cassette are the important parts to get synchronised.

With Campy I'd expect it to be the same but you know how those Italians are.

Will the gears work if the bike is in the stand but don't shift as well when it's being ridden?

How old are the jockey wheels and cassette? Quite often fitting a new chain to an old cassette = shit shifting, even if the cassette doesn't look too worn. Jockey wheels could also be worn and screwing up the shifting.

I presume the shop have checked the alignment of the hanger? tell tale sign of a bent hanger or mech would be that the gears can be made to shift fine at one end of the cassette but end up out of whack by the time you shift to the other end.