Yeah the pot maybe bad.
I had my pedals in storage and once I pulled them out to use, I found them to have 2 issues. One was brake was floppy and second issue was no values being registered, both on the left brake.
I'm not sure what fixed the values registering. As soon as I took it apart to fix spring issue, the brake started registering values again on the pot. On my second attempt at fixing spring, the pot stopped registering values again, and so on my 4th attempt, I simply took it apart and put it back together.
Maybe it was a loose wire/solder joint, maybe a pinched wire. They are very fine wires. Been working for 15 months now.