Any recomendations? This is for a SIG Something Extra so I'm kinda limited with prop diameter until I get some taller landing gear. I can hover with a 12x5 but I'm just about maxed on the throttle. Oh and the engine has the PCP done by Clarence Lee. Seems to me that for a .61 this engine doesn't have much umph. Of course I'm still breaking it in so that might be the problem.

Thanks in advance,

I had a MAS 13x6 on my K&B 61 twist head with the tuned muffler on a 7.5 lb 4 Star 60 and it would hover.