I'm using a MA 14-6 on mine and is pulling my CG Skylark 70 around with authority! I believe I've richen it to 8900 rpm's. Topped out at 10,400 w/ MA 14-6! Idled about 2900....
Tailskid I see a problem if you don't-- first 10400 to 8900 says your richened by 1500 RPM and not the norm 300-500 (running to hot otherwise) and 2900 RPM is way to high to brag about.