OK, I guess I can accept that. I'll keep the new Campy chain on the shelf until I get a new cassette. However, I still find it strange that a newish Sram chain works fine where as the Campy doesn't, especially on an all Campagnolo drivetrain. Maybe just looser/more forgiving tolerances in the Sram I guess. On a good note, since the Sram does seem to work fine, it's not an emergency situation and I can take my time getting the new cassette and with any luck still get a lot more miles out of this one. I remember reading a post recently about someone "reshaping" the teeth slightly on a worn freewheel to get it to mesh better with a new chain. I wonder if that same idea can work in this case.

Thanks,
Andy