How many times are u gonna have to be asked? What is the magic number?Supply us with some real world numbers. We can’t help u if u won’t help yourself and us. There is already 2 pages of guesses. I once had a pick up in the distributor cause this same problem. Check ohms on all ignition components. Are 5&7 wires crossed up? How many volts to the coil key on engine off and engine running? U have done excellent work on this whole build. Now do the same with this engine. To much preload can cause these issues.
Kim