I just want to know if I am getting good RPM numbers. I put a 18x8 JXF prop on my 35GT and it turned it 75-76. The engine is used but it has only a tank tru it. The Exhuast Residue was BLACK. I ask because I am going to run a 3 blade i believe for ground clearance and the RPM's seemed low for a 2 blade. What also is a good starting point for the needles. I had to adjust the lowend because it was dying when I advanced the throttle quickly from idle.