Cue com. Mr. Barringer uses a 7/16x10.
I'm not saying you're wrong Mike, I'm not quite that bold.
However, I've built many shafts for Cogs and I know them to be 7/16x11.
I've also built a few shafts for Joe B. cues and used the same tap.
No one has complained. This might be worth investigating.
I'm not saying I'm right either because builders do change things at times.
We all know the reason for bastard thread pins; exclusivity, as in,
if you want another shaft, I'm the only one that can do it.
Regarding Joe B. cues, I recall at least on a couple of occasions, the client
sending the whole cue for a perfect mate/match. They fit as they should.
Like I said, things change. Maybe that's the case here.
I have no interest in talking to Joe B. Maybe you could ask him ? Lol
Have a GREAT day Sir.