Nothing personal, but based on your posts you should try to find an EM tech. My guy charged me about $120 but I learned a TON watching him and letting him talk.
Shotgunning a mostly-working EM is a bad idea, IMHO (I’m speaking from experience). Get a schematic, find the most likely relay or switch stack for your problem and put those under a microscope.
If you post the specific problem, you’ll get lots of support in this subforum.