So - had a very small ding in my aluminum Michigan Wheel Vortex prop - 14.25X21pitch
Changed it to a Quicksilver Black Diamond 14.25X21Pitch brand new aluminum prop.
Weird thing is, since the change, I cant get past 5000 RPMs now, still do 80kmh as before but the motor will not rev up to what it did before at 5500-5600 RPMs.
Why? Same prop size and Pitch - Same speed but lower RPMs (does that make it more efficient).
D In Mtl