Then your results are different from mine. I neglected to remove the coating from the first cable of this type I had and shifting began to slip after a couple of rides. I readjusted it, tightened the clamp bolt even tighter, and the same thing happened. Finally, I scrapped off the coating and the shifting has remained stable ever since. And, yes, I do know how to tighten the clamp bolts and have never had any problems with any other type of cable or these after removing the coating under the bolt.