Hi there, We also experience poor pressure from the shower. After checking for voltage drop at the pump, checked the valves and filter screen for obstruction, OTT sent me a replacement pump which before installing I benched tested along with the original pump, timing the GPM. Both pumps performed the same and within rated capicity. After installing the new pump it helped a little but not much. I too was wondering if this was normal. Please pass along anything you find that inproves the performance, thanks.
Joel&kim
Austin Tx, 2015 Oliver legacy elite II