I have a boat and it does not seem to have the correct prop on it. I am only running 4200rpm and this is going with the wind. The boat is a 22' Bay Stealth center console. I think I should be running around 5000-5200 rpm. If I troll around at 4 mph it has gotten the engine hot a time or two. So I am assuming the engine is working too hard to turn the prop. Currently, it has a 19 pitch 14.50 prop on it. Any suggestions? Boat weight is about 2200lbs.