it’s just a matter of boring the insert out to the right size and depth. Then run a 5/16-14 tap back through it. I can’t remember the exact size to bore to anymore though.
My point was, as far as the car analogy goes, there are huge differences in what a Sentra is capable of and what a z/28 is capable of. There are things that a Sentra cannot do that a z/28 can do.
Out of alll the playing cues I’ve ever owned, there hasn’t been one that did something the other...
If you can find a 5/16-14 jointed shaft that has the same size joint, it can be easily modified to fit a pechauer. Any competent cue repair man can accomplish it.