Well because I can’t leave things alone and I also don’t like being beat i ordered some more components for the pgm and attempted yet another repair on the original Pgm unit. It has a burnt board but with some epoxy putty and some copper strands I think I’ve managed to repair it. I put power to it and nothing blew so hopefully when I plug it in to the bike it will work. I’m hoping to just use it as a sacrificial tester so I don’t fry my last good unit.
I’ll update the outcome as soon as I can get the enthusiasm to try it!

Edit: repair didn’t work , back to the drawing board 😂