Hey guys here is the problem I am having with this motor.

It seems to be "Cold Natured" meaning it takes a few min. to crank up and you got to let it run for 30 sec. or so before you can begin to rev it up.
Its not dependable. After I rev it up and fly, it might run fine for a flight or two and then the suddenly start coughing and acting up.

I am running 15% nitro and a Fox glow plug in it. I dont this this is the problem b/c I have another pro .46 that runs great on the same set up.