I have a sleekcraft sst with american turbine and 427 chevy blower motor. The pump has a B impeller, loader grate, ride plate, droop, and diverter. My problem is that that the boat has a terrible hole shot. It cavitates the pump If more than half throttle is applied. It runs good up top, but I belive 6000 rpm maybe a little too fast engine speed. My question is sould I change to an A impeller or run an inducer with the B impeller?