Bit of a double post here,but I thought it would be a fair update on this thread.Pasted from another thread...

Quite a few flights on it now,the motor is A1,starts easy,same sequence everytime.Smooth and torquey.
I bring the plane in HA,often,right on the runway,low hover,strong pullout,throttle response is 100%,no burble,no coughs or hickups no matter how many G's or weather.Completely confident to pull me out of trouble. Its also quiet with stock muffler and 22x8 MSC.
I love it,glad I purchased it.Thanks for the initial troubleshooting everyone.
If I had to buy another 50cc,I dont think I would even consider any of the others available.