Originally Posted by twocicle

Barring any real tech info regarding the engineering behind stepping the height of ring teeth, I gave it a shot using as examples the FSA Super Road 53T and 52T, and a middle 39T from a triple. All these had pins and varing tooth heights. So with a fine file in hand I set out to profile some teeth in the vicinity of where the pins are located.

Result... seems to be working. Shifting up from the granny is a touch less quick, but otherwise the chain is no longer "skating" on the teeth. Will need more time & riding to see how this goes.