My bathtub has a Moentrol single handle system. I recently installed a new handheld shower head with a "pause" feature (Located on the shower head itself) which limits the full flow to a trickle. When paused, the temperature of the water trickling out of the faucet, as well as the shower head, will start to slowly increase until it is extremely hot. Once the shower head is "unpaused" and the flow has resumed, the temperature will eventually return to normal after ~10 seconds but during this period the water is still very hot. Any idea how I can remedy this behavior? I am concerned about somebody scalding themselves accidentally.