my o.s. .46la with less then 30 min running has just stopped running. my instructor his grandfather and i agree the sleeve is in wrong. On top of that my friend stripped the head screws ,well 1 of the> out so we cant get the head off. Also the motor is leaking. So its goin back to tower. did i get a lump of crap or just a bad one out of many good ones? Im thinkin of selling the o.s. when i get the new one back and am probably goin to go with an evolution. But i heard good things about TT how much are they?