i am working on my friends blaster its a 01 it has been sitting for about 5 to 6 years. he road it alot and it just shut off so he threw it in his shed where it sat for a wile, and he wants to get it running again so i have been working on it, i removed the tors checked the reeds all the gaskets are good, the carb is clean i removed the choke/ the jets air screw and cleaned it all out, and all i get out of it is back fire, i got it to run at one point but i had it full throttle and all it did was idle and it sounded like sh*t it has good comp it was 115 psi.. i was thinking maybe the woodruff key broke off, and the timing is off any ideas..