Although its probably very tempting for the usual haters to flame and bash, because you finally have a chance. I will ask the mods to please shut this thread down as soon as the first sign of flaming occurs.

Now to the point. My first problem with my plane happened today. I got my automatic starter, and went flying. With a full tank, the engine shuts down in the air (5/6 flights). No problem landing it but still...

Other facts that might help are:
It flew perfectly fine yesterday (had NEVER shut down in the air before
Muffler's exhaust rotates slowly (its always done that, probably a little loose)
Maybe the starter forced it too much?
In the ground when i put full throttle, no problem
One of the times it shut down happened when I rapidly switched to full throttle ( didnt happen yesterday, but I know that can be due to bubble etc...)
Yesterday I did alot of tricks, full throttle, stressed the motor alot.

Thats it.

ONLY post if it has happened to you, AND you have fixed it. Post how to fix it.