I know this topic has been beat to death on many many forums, but I can't seem to get te right answer or combination. I'm getting EXCESSIVE popping on decel. As soon as I let off the throttle it sounds like someone is unloading a 30round mag from an AR15.. Here's the specs, 06 450, AIS removed, yz throttle stop, g2 throttle tube and cam, white brothers E2 slip on, Elevation is average 260ft. Jetting is JD 170 main, 48 pilot, Scott's fuel screw at 1.5 turns. Accelerator pump is wired, gray wire mod. I've put a new head pipe washer in and cleaned the carburetor twice, no difference. AIS plugs seems to be fine, tightened them all. I haven't messed with the ACV (air cut off valve) or checked the exhaust/intake valve clearances. Just bought the bike used and can't seem to get it running correctly. Bike doesn't have any "bog" but it will not idle or run worth a flip until it's reaches 150degree coolant temp (trail tech reading). Which is usually idling on choke for a minute or 3. Once it hits 150 it'll idle fine. My normal temps here in Arkansas are around 80-95 degrees. thanks in advance to anyone that can help me before I light the bike on fire and walk away!