I recently installed a new 50 gal. electric water heater, my home has a well and pump system with a bladder tank, right after I installed the water heater, my hot water pressure was down throughout the house, not enough to be a problem any where but the showers, when a shower is on and the hot water is turned on elsewhere the shower goes cold. Any ideas? I've raised my system pressure from 30/50 to 35/55, bladder tank pressure is good. Thanks.