Originally Posted by
LarrySellerz
Friction shifters. Most of the advice ive gotten about cadence is that mine is generally too high, but today on spectrum there was a guy who seemed steady who was probably doing at least 130 rpm.
Maybe tighten the screw that holds the shifter on the boss. When I've had the chain start to skip in a gear that had been fine, it's generally because the screw was a bit too loose, so the springs in the rear derailleur were pulling the lever back to a smaller cog.