Why don't you try fixing your plane yourself? Don't get me wrong. I'm a newbie and wouldn't know where to start. But, I would ask the others at my club and find out how it is done - this kind of knowledge will come in useful in the future and it's better to practice on your trainer rather than your pride and joy aerobatic plane

I washed my engine out with water. Crtical thing is DONT TURN it! After you have washed it out you could take it apart to see of anything is bent inside etc. After you have washed it you can either run fuel through it or after run oil... to stop it rusting obviously.

Good luck

photoniq