Got this vega it has a 406sbc , dart pro one heads, pbm cam, 750 brawler carb. Cannot get it to idle in gear. Had an old bg demon750 carb on it before switched to this brawler 750 hoping it would fix the issue. Still no change, ive adjusted the carb multiple times. Idles perfect in park but in 1st bogs down and dies. If you keep your foot on the throttle it will stay running and runs consistent 6.40s in the 1/8. Anybody have any words of wisdom or ideas i could try? Swap jets? Get an 850 carb?