Back in the day there was a kit. Primer and a glue. What you did was make sure the shaft was correct and not 180 off. Mark the length and there normally was witness marks or you can compare the plastic on the shaft to the holes in the outer shaft and mark the length. Then you primed the areas and then applied the adhesive and slid the shafts together to the marked length and let it cure. This kit is not available and if you do find one it most likely will be dried out and junk. What I do is get a quality Loctite primer activator with a tube of quality super glue. That's about all the original kit was. All you are doing is priming and gluing the plastic together.