I got this thing in boxes put it together and it ran for about a week before detonation I blame myself as I have never done a 2 stroke before but a complete runner would be nice so maybe I could take my time and figure out how to rebuild these things the right way , the head I have is still good the jugs I can bore out as I believe they are .020 over now the crank I'm not sure if it's shot or not but the right side rod needle bearing is blown to hell so I'm not to sure but yea that's my dilemma