I'm getting right now 13700 on a 12x6 mas scimitar propeller....it makes me think that the engine likes a heavier prop...I have an apc 12x6 that I may try tomorrow..and maybe I should try a 12x7 or 12x8... I don't like the fact that with the 12x6 the engine (or the plane) cannot be set in a low speed setting...the engine at 1/3 throttle still screams...so it's hard to get the desired airspeed for landing...

Jorge