Hey guys! I am finishing up my restoration of a 72 GT. Engine rebuilt, new everything. Sadly it is running poorly. It acts like it has weak spark. Runs fine until I give it heavy throttle. I am only getting 11.5 v at the + coil terminal(batt voltage 13v). Is this normal? I know it is fed by a resistor wire from the fuse block but this seems a little weak. All ignition components are new and has a new weber. I did find a bad float needle valve but it has been replaced. Any suggestions?