I'm working on a older #9375 non HP 1050 Dominator, I ended up drillinga and tapping the main body to restrict the idle and transfer fuel feeds, I got it to lean to start with Can you say 16.1 and up on idle and light throttle crusie, major bog off idle I do have the idle down to 14.8 to 16.1 now after warming up,part throttle is 14.6 to 15.5 AFR still. I may richen it up a tiny bit more, I'm at 3500 Ft above sea level using Oregon non ethanol pump swill, no noticable pinging or detonation yet, 10.78 to 1 comp. ratio with aluminum heads