Ob interchangeable joint issue

Texas Carom Club

AzB Silver Member
Silver Member
I have a friend that has a cf ob shaft with the joint that can be changed out.
using 3/8-10 modified. Said it had to be changed out once before for getting to tight and last night out of now where she couldn't nearly get it screwed to the butt. When using it Monday with no issue.

Is this a thing that's happened much ?
 
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