ok so my blaster seems like it doesnt have any compression when i try to kickstart it. when i first bought it it ran like a scolded dog then i started having problems with it not shifting past second gear and then it started to lose compression and now it wont start at all. i took the head off expecting to see the piston obviously messed up but i couldnt see anything wrong with it besides that it wiggled from side to side a good bit. i assume i may need to rebuild the top end but im not really sure, any help would be very much appreciated, thanks!