i baught a blasty the other day for 100 bucks, the guy said he had the whole engine rebuilt an a week later it locked up so he was tired of it, he showd me 1200 worth of reciepts for motor work and all... so i take it home and tear it down, everything looked great inside except for the crank was froze up, looked brand new but froze up. i got to messing with it and got it to move but it kept getting stuck so i thaught there was something in there maybe a piece of an old piston, i turn the bike upside down and spray the air nozzle up into the upside down motor and "ting" out drops a beat up WASHER!! im like wtf? howd that get in there...?? anyway i put it back together and it runs like a new rebuild should..hahaha