After a long bout of denial, I am finally addresing my 'non-normal' popping on decel. Its bad. Of the three things that are common culprits: 1. exhaust leak 2. hot start valve leak 3. pilot jet circuit I am leaning towards the hot start circuit. It runs beautifully with minimal pop on decel (but still a little) with the choke on. I have adjusted the hot start cable to maximum slack with no change. I can hear a 'contact' sound when I release the lever as if it is bottoming on something. That said, the valve had some soot on it when I checked it this morning. The assembled valve/spring looks fine. On the hot start vavle lip seal in the installed position, should the lip be on top or bottom? Mine is on top. How can I confirm that the hot start is closed completely during normal operation? How can I confirm the cble is not FUBAR? When the choke is on, the idle speed increase when I pull in the hot start and returns to normal when I let go. Yesterday I installed a new exhaust gasket btwn the header and the head. I also sealed the mid-pipe joint and confirmed this morning that its still good. I do not think its an exhaust leak. Finally, I don't think its the pilot circuit. It starts pretty easy and will idle fine. With a 45, 48, and 50 pilot jet, it still pops - all at various screw settings using the zip-ty fuel screw. I don't think its TPS because there was no difference with the connector unplugged. Granted, I have not checked the TPS but it may be the next step if the hot start is not the root cause. I am hoping the lip seal is upside down Any help would be appreciated.