Got the new box installed today. Re-timed the engine. Runs great now. According to MSD a new box requires re-timing. And, they say you can't use a dial back timing light. I had to dig out an old light. But, apparently they are correct.
Good luck this weekend. I hope to get out soon .hopefully with my issues resolved. Keep us all posted. When I can't be at track I feed off other people going out and having a good time. Lol.
Mcknight77 can you post pictures of how you have your box wired to your starter relay? I'm currently having issues with my 6al.
https://www.mpsracing.com/instructions/MSD/wiringManual.pdf I also have an MSD Ignition app on my phone that is very helpful and has all of the wiring diagrams as well.