Sound like the cable sweep is to long on the throttle side of the cable. You might need to change the radius so the cable doesn't move as far. I had same issues when switching from Tbi to carb. Hope that makes sense.
2005 2500hd CCSB 4wd Afe Bladerunner 4" turbo back exhaust egr blocker pvc bypass & airbox mods nicktane filter adapter Cat 2 filter Kennedy single liftpump efilive Idaho Rob 285/75/16 Bfgoodrich A/T on black steel rims remote start pioneer single din receiver 200 watt amp 15mpg average
1989 Chevy K5 blazer 400sbc Tbi 3/4 ton axles 6" lift cross-over stearing 1ton flange drive shaft Detroit lockers f&r 4.88 gears 37" Goodyear MT tires
1986 Monte Carlo SS 350 700r4
2001 Yamaha Wr426
1981 Honda cr250
1980 yz465 w/490 motor