I am running a crestliner pt20 with a merc 200 pro xs v8 and a nd a tempest plus 19 pitch 2nd mounting hole down with a 6 inch hydraulic jack plate, with 2 people a cooler and light tackle I can only get about 51 mph tops fully trimmed out turning around 5600 rpm... any one with a similar set up? Any tips to get more speed?