From reading your post and replys it sounds like you know what your doingAfter 7 years in the hobby you still don't know how to tune a engine,maybe you need to do some reading on how to properly tune a nitro engine.Maybe you don't care cause daddy will just buy you another when you blow it up from not knowing what your doing.Good luck getting anyone on here to help you since you know it all and everything we suggest is dumb.If you know what your doing why did you have to take it to the hobby shop,so they could tell you the motor was shot you should have known that with all your knowlegeDADDY MAY I HAVE ANOTHER.