Hello. New boater here. I have a 1993 Larson Escapade 240. It is 24' with a 225hp, 5L, Mercruiser. At wot I am at about 4200 rpm and a speed of about 34mph. It seems like I should be going faster. In fact, earlier this year I swear I was at about 39mph. The speed is coming off a built-in...