Gladman,

If you know how take the thing apart and inspect it and be done with it. a typical 2 stroke engine has like 10 major parts in it

Inspect the piston remove the sleeve check the bearing connecting rod see if it ingested som foriegn matter.


also take post holes advice about the sleeve moving remove the head the should be a small pin on the cylinder and a notch on the sleeve. Pin goes in notch and sleeve is properly aligned...