screw the joint pin back into place, obviously it was stuck at one time in the original shaft.
Possibly that's why an oddball replacement shaft came to be.
SCRUGGS, that's a Tim Scruggs.
Thanks for your posts. Nobody mentioned the shaft collar being a little larger. I did not notice it myself. That is worth noting, but nothing else about the shaft hinted at it not being either original to the cue or at least original to the same maker and period.
I have not heard of a 5/16-14 joint pin seizing in a brass insert before. I don't think a loose joint pin would have escaped me, but that is worth checking out if and when the cue is in my hands again. That would explain the pin projection being longer than the norm, but I don't think what you suggest was the cause.
I briefly considered it could be a Scruggs. I have seen pics of Scruggs with the larger radius brass insert that includes maple with the pilot (this seems to go away from the schon theory), but nothing else about the cue suggested Scruggs to me.
I'm not familiar enough with PFD cues to know why you would also say it is a PFD.