I just bought a 14 X 21P 4 blade aluminum prop by Sola's, what do you guys think of that prop. I currently have a 3 blade 23P Lasr II stainless steel. I'm curremtly having a cavitation problem on take off. My outboard will rev from 3000RPM to 4000RPM before it plains. The Max RPM is 5600RPM...