I discovered that my XPCR Phase Coupler/Repeater was no longer working. I put in an old passive coupler and the non-working outlets work now. Still the funny issue with the two that refuse to be who I made them.
If you rotate the dials one code (move from B7 to B8, for example), does it then work on B7?
I suppose it is possible that something got fried when you had the power spike, or, the contacts are not working right on the dial. Even rotating them around a few times doesn't always fix the issue.
You might try different codes, and see if you can find one that seems to work reliably for you.
The contacts may be dirty/worn, and rotating the dial around a few times isn't enough to clean them.
If you feel adventurous enough, I suppose you could try opening the modules up, and rake a good look at the contacts.