I just got a new OS .46 AX engine and have broken it in or run it in. I followed the directions in the user manual.
I have about 4 full tanks of fuel run thru mine so far. I'm at the point where if I give full throttle, pick it up like its flying verticle,
the engine don't bog out. Doesn't even sound like this affects the motor at all. Heck, I don't even need the torque starter for it.
I just connect glo driver and hand turn the spinner. She fires right on up! Of course I'm gonna have one of the club guys check it
out before it actually flies...

Dave...