My purpose of prop change is damage to my old one and fine tuning. Current prop Michigan wheel 15.25x15 3 blade aluminum.84 beachcraft funrunner 18.5.Approx weight 24-2600 lbs. Merc 229 3.8l v6. 185hp.WOT at 5000 ft was 4400 and about 31 mph on the dash gage.Trim full down position.I would like...