detail needed about ALL drivetrain components, you cannot omit anything. Any mismatched components, may they be chains, cassettes, cranksets or anything else can contribute to minor issues. I use a Campagnolo equipped bike, but I have been using KMC chains. Campagnolo claims that using KMC chains can result in chain suck in some conditions. Know what? they are right. Sometimes my bike that has a KMC chain experiences chain suck. My other bike with a Campy chain doesn't. When you ask a question, ALL details are important