well long story short, its been running good all weekend, well i was just cruising down the road a few mins ago, raced my buddy again and he killed me pretty good, i noticed that the powerband didnt have quite the hit to it, when i hit 6th he just pulled away when usually i do, i parked it beside the road and it just died on me, after 3 kicks it started back up but then the left side started backfiring really bad, i brought it home and it still had power but nothing like it did earlier today, and it was still backfiring like a mofo, i dont think jetting is the problem due to how its ran the last 2 days and evenings, could it be the tors? clogged carb, or have i screwed something up inside the motor??