Picked up a shaft for a ferrule replacement. The customer says the cue has a click in it when you hit the ball. When I got to the shop, I took the ferrule in my hand and you could bend it and hear it click.
Curious to see what I’d find inside, I cut it open to reveal-
A new tenon was added and the new ferrule was custom fit to the tenon so it didn’t need nearly as much glue!