Hello all, I have been having issues with my bruteforce 750 backfiring when accelerating. I took the carbs apart, cleaned them, it helped but has not been the fix. I did notice that when I cover the intake of each carb while it is idling, covering the front carb the motor dies, covering the back carb has little to no effect on the running of the motor. I also noticed it is backfiring through the rear carb. Any ideas on where to go from here? Valve gap maybe?