Sometimes, when shifting down from the big ring to the small ring, my chain drops between the rings and free-spins until I wiggle the shifter up and back down to re-drop the chain on the small ring. I'm running 50/34 Rotor rings on identical cranksets on both my road and tri-bike, and it only happens on my tri-bike.
How might I fix that? It's not good to loose power on a TT when this happens...
How might I fix that? It's not good to loose power on a TT when this happens...