Ah yes, good point about Silvio and the floor tiles from "No Show" (Season Four, Episode 2). But in a way, this was Silvio trying to point out the error of Tony's ways by making Christopher the acting capo of Paulie's crew. He showed how Christopher couldn't handle any adversity or difficult situations.

As for Carlo Gervasi, he hasn't done anything overt against Tony, but he was one of the many who was VERY unhappy about Tony's decisions regarding Tony Blundetto. There is a scene with Carlo, Larry Barese, and Bobby Bacala in the Season Five finale. Carlo and Larry Boy are complaining a lot, with Larry being the most vocal.