Rumpole, I see you’re in Colorado. If this readout is correct, then it seems for part of the day your AC voltage is riding above the 126 VAC limit which is defined as maximum (+5%), and apart from that you seem to be otherwise running at 125 VAC, which is certainly at the upper limit of the acceptable range. Not sure if using a regenerator to provide a stable 120 VAC will help, but it’d be interesting to hear your results if you tried it. You might want to call your provider to see if they can check your incoming voltage and confirm that they see it exceeding 126V.