I have a Saito 100 in a Yak54 (60), I have run a gallon of fuel through it, now trying to tune it for 3D flying. The engine runs clean to about 6/8 throttle, at that setting I am pulling about 9000rpm, from there to WOT it only picks up 1000RPM, and starts to sound rough (rich), and the engine goes up/down about 300RPM at WOT (on its own). Seems to run better (smoother) at 6/8 throttle. My HS needle is about 3 1/2 turns, and LS about the same, I am using a 14X6 prop for break-in, and OMEGA 15% 4ycle fuel. QUESTIONS 1) how do i get motor to run smooth from 6/8 to WOT, and hold steady RPM at WOT ? 2) what is best prop for 3D (hover) ? I have not flown this yet (winter project), just tuning now, any help would be great.