So I began the repair last night. I cleaned both parts with alcohol and used a file to put a chamfer around the circumference of both parts, similar to what you do in welding. This served three purposes. It exposed fresh surfaces for better adhesion, provided a rough surface for better adhesion and made room for more JB Weld to strengthen the joint.
I used the regular, slow curing JB Weld because from all the research I’ve seen, the quick curing epoxy products don’t have strong surface adhesion of their slow curing counterparts. There are a lot of videos on YouTube that illustrate this problem. The manufacturers list the strength of their epoxies but no one talks about the adhesion problems of quick cure epoxies.