Ii have a off idle hesitation,warmed up.185 deg.Just rebuilt a edelbrock #1406/600 cfm. Replaced a very worn out holley 600. It's on my mild 318,stck bottom end,78,00 miles,performer intake,mopar elec.ignition,hughes 318 muscle cam,street carter mech. fuel pump,stock coil,msd wires,5 deg. base timimg, vac. adv. hooked up, carb in excel. shape, all settings set to rebuild kit specs.Edelbrock kit. Any ideas??