alright here we go. i had a holley (2f) but put on a webber 32/36. i didnt like the webber cuz it ran rich and there was a noticable decrease in power. i messed w/ the timing to see if i could get it to run clean but decided to scap it and put the holley back on. once on it ran like crap. i can get it to stop back firing. normally this stuff is very simple for me but i cant seem to figure it this time. as soon as i crank over the engine if backfires, making it very hard to start, as its starting it winds down like its running out of electricity then it just pops. once runningl, lets say @ 1400rpm, it will backfire ever 10 seconds or so. its more like a spit. when i throttle it from 650rpm it back fires immediately and i have to nurse it a little to get it going. adjusting the timing doesnt help to much and the carb id nice and richly black. any suggestions?