Not Getting 12 Volts at Coil

I have spent countless hours testing resistance in my 74 Dart's wiring harness. Most of the wires have no problem, yet I did find one break in the neutral safety harness that comes from the starter relay to the wire harness that leads down to the neutral safety switch which I repaired. I have multimetered and test lighted the wires and have drawn my own diagrams to get a better understanding of the battery flow and where the wires go. I cannot get 12 volts at the + coil.

Facts - Engine from a 1973 slant 6 w/ with a Holley 1920 carb that I just rebuilt with a Walker rebuild kit in my 1974 Dart.

Last driven in 1990 - stored in covered barn - complete body restoration and paint job in black. Very minor rust at rear quarters. Wiring harness still has original factory tape and looks extremely good. New alternator, new fuel pump, new gas tank, new radiator, new ballast resistor, new voltage regulator, new starter relay, new five pin electronic control unit, new coil, new battery and battery cables. Engine cylinder head rebuilt by local Mopar guru. The car is at TDC compression stroke and valve lash cold has been done.

The distributor is factory original and the spark plug/coil wires are from 1989 (less than 2000 miles on them). The starter is the original and has been tested good.

The car cranks with no problem. It just won't fire and run. I have 6 volts at the + coil in the run and about 8.5 at the + coil in start position. It cranked and ran a few seconds two weeks ago before I found a break in the wire that comes up from the neutral safety switch on the transmission into the wire harness that runs along the firewall. That break has been repaired and that section of wire/connectors has been reinstalled.

I did try to remove the starter switch in the steering column, but gave up when I couldn't press out the pin that holds the steering column locking mechanism in order to get to the starter switch behind it. (Chrysler says you need a special too to press that pin out and DO NOT HAMMER IT OUT). I gave up and put the steering column back together.

Who can help me find a problem in my coil power circuit? I am ready to scream. I am not a mechanic.