Hello everyone, I have a question that I need to ask before I try to help out a fellow pool player. He bought a carbon fiber shaft from rhino for his production, Joss Cue with the standard 5/16 x 14 piloted pin. They sent them the first one and he sent it back because it didn’t fit. Rhino then sent him like a test joint protector to make sure that fit his butt end before they sent out another. The test joint protector fit perfect so they sent him out another shaft, and that one did not fit either. For one, the pilot was too thick which I took down to match perfectly with the test joint protector. The problem now is that the threads won’t go all the way down and leaves about a 4 mm gap and I can tell the pin. It’s either catching something in the threads or the insert is
tapered which I don’t think it is tapered. Testing the depth , there is plenty of room for the pin. He emailed them back and they told him to take it to a Q repair to have it fixed and they would knock $40 off the price, basically send him $40 back. I was wondering if I bought this 5/16 x 14 HSS tap, if that would clean out the threads? I know the right way to do. It is to replace the whole insert but I don’t trust my Mid-America basic Cue repair Lathe to do it especially if the threads get messed up pulling out the insert. I really think the threads are just a little damaged towards the back of the insert and if I could just clean them out with a tap it would fix the problem. I’ve included a picture of the tap that I want to use and just need your advice. Thank you all in advance for your advice.