Ok put a force 125 on 24' pontoon never gave a thot to check prop before trying it out. On water got 3200 rpms and about 17mph (struggle) got home took prop off to find out it was a 12 3/4x21 pitch ugh. Bought a 14x13 thinking that would get rpms up around 5200 well it only raised it to 4000 at wot. Holeshot is way better and tops out around 23mph but I am still below factory of 4500-5500 rpms. Why if dropping 8 degrees in pitch I only gained 1000 rpms? Should I go to 14x10 or should I be looking somewhere else? Carbs, fuel pump, timing? Engine runs great compression was at 120-127 in all cyls.