have a mod 19 that wont idle no matter what it is bored out wit a JE 3.1'' piston, billet rod, precision cam grind 212alt, new stock valves, double valve springs with a valve lash of .014, billet flywheel full retarded, with a EC mod 28 race carb. I have tried to adjust carb, adjust timing nothing seams to help. any thought would be a great help