Hello all, I need some help with my 2003 WR450. I have a race this weekend, and my bike won’t idle. Story: Last week during a harescramble race, I stalled the bike going over a small log (about 4” round) and ever since then, my bike will not idle properly. Once started, the bike will only idle for 5-10 seconds before it dies and the throttle has become extremely touchy right off idle. Since the race, I have cleaned my air filter, and my carburetor. I thoroughly cleaned the carburetor with carb cleaner; I removed all of the jets and sprayed carb cleaner through the jets, and the passage ways that the jets are seated in. None of this seemed to help. Other symptoms: The bike won’t start unless I choke it, no matter what the temp is. Usually I can get the bike moving if I leave the choke out until the rpms are up. Then I shut the choke off. Once its past idle, the bike runs decent through out the rpm range, but I am noticing a little bit of “poping” or slight backfiring that wasn’t there before. After 2-3 minutes of riding, the bike will stall and die if I let the rpms drop to near idle. Blipping the throttle or turning up the idle adjustment screw doesn’t help. Please Help??? Where do I start looking??? Bad gas?? Accelerator pump?? FYI, my jetting is only slightly richer then stock. The main is 158 vs 155 and the pilot jet is a 48 vs a 45. This set up has worked great for the last 7 races.