Quick question about a Bob Long since I know y’all love them here.

Recently purchased an OG BL TRex with a spool engine which was brand new.

During setting pressures and chrono’ing I shot about a hopper through it and took out the engine to lube and noticed some of the anno had come off the red bolt tip in a 1/2 inch rectangle exposing the silver underneath.

I checked to make sure the bolt wasn’t over tightened/loose on the ram and it seemed finger tight with my allen key.  Also checked the brass piece held by Green loctite wasn’t coming off.  Is this wear normal after such little paint? If not does anyone know any fixes I could try?

Thanks for the help in advance!