Here is one for all you troubleshooters; I have an 89 24ft Century 4500 with a 7.4 Ltr 330HP 454, 8 cyl, Thunderbolt ignition, w/ Bravo 2 stern, 275 hours, not sure the prop size. When we put it in the water this year it ran great, good hole shot, great top end 46-4800RPM 50 mph. <br /> Now...