On my 76 350 4bl Quadrajet, I've rebuilt my carb, set the timming, spark plugs, new wires, new filter, fuel pump, HEI electronic module-flat banana shaped thing ( I need sleep I can't think right now), and who knows what else and my truck still hesitates when I stomp on the gas. Any Ideas on how to fix this? I noticed my metal fuel line going into the fuel filter is twisted a little. Could this be the problem? Do I need to rebuild the carb again? When hooked up to a vacume guage I get about 13 wich would indicate an intake leak but everything seems o.k. Oh yeah, (I hope your still reading this ridiculouly long post) I tried the vacume guage carb mixture adjustment and it didn't seem to help. Please help!!