hey big scale, don't feel alone...I've had three fuji64s and had issues....A year ago was flying my 1/3 scale Fokker triplane at an airshow....after three minutes in the air most of the engine departed the airframe and dropped to the ground...I had to deadstick a 45lb triplane which was now severely tail heavy...not easy, but managed to save it......the crankshaft SHEARED...was running 32:1 pennzoil and slightly rich mixtures ...........put on a brand new fuji 64.....was flying three weeks ago again see something falling from the airplane; the muffler...oh I thought, will have to land hot cuz idle high but no big deal....find out the muffler AND part of the cylinder cracked off.....somethings up...I just bolted on the third and final fuji 64 but I might just take it off and refit a different brand...None of my Zenoahs ever did this...