hey guys just picked up 08 yz250f real cheap cuz it runs terrible (only starts with choke, revs real high, stalls when you give gas). thought it was clogged up carb cuz its been sitting for a year the guy said. took carb off and not clogged at all. I do know the gas is super super stale though you can smell it. Anyway long story, i lost the a jet so cant put it back together yet lol, but i have another one coming in mail. Could it only be the stale gas?? I hope so. Or should i try the plug too?? let me know thanks.