Great idea with the electrical tape! I'll try that.
Also I've been meaning to get a multimeter - don't have one yet but know they can be cheap.
Edit: I covered a few areas with tape and the only thing that happened was the Q-code changed from 77 to 76 🙂
I removed all the tape and the code went back to 77. Tried a 2nd time to do a better job with the electrical tape coverage and got code 76 again. I consider it progress 😉
I may try again tomorrow. But I'll definitely put a multimeter to the area when I get one.