Hei conversion troubleshooting

The only thing that I can think of is that my system is continually charging at 14.5 to 15 V due to voltage drop to the regulator supply wire. Next time I try to do the HEI thing, I’m going to install a relay for the VR as well as the one to ignition. My theory is that when it gets too much voltage the GM 4-pin goes into some kind of limp mode.