Originally Posted by
luke55
Yes something is definitely wrong even the Campy techs are confused.Just for kicks I borrowed a matching set of 50/34 sram power glide rings ,shifts like a dream . Set it back with the campy rings and same old sluggish terrible shifting ,a real deal breaker in a local crit.
So you actually already solved the problem without realizing it. Something is wrong with your chain rings. Worn shifting ramps, generic with no ramps, totally worn out, something.
This experiment proved the derailleur is fine and you need new rings.
Follow that rabbit hole, not the derailleur that seems quite capable of “shifting like a dream”.