I don't get it  nostr:npub1q6ya7kz84rfnw6yjmg5kyttuplwpauv43a9ug3cajztx4g0v48eqhtt3sh - what's causing that scuffing? Minor movement during the alignment process? (Or do you really have to crank down on that alignment bolt?)

Seems like a redesign is in order (and a good polishing of the jig)...