Doing the XJ shaft swap right now but I'm having a hell of a time getting the stock shaft off. I've managed to tap the top end down so it's barely on the steering column's end but that's it. Won't budge further but will wiggle.
Sounds like mine, no "pins". We weren't getting anywhere I finally just said, "**** it man, whale on it!" and my buddy did. Started collapsing under the battery of my 5-lb (I think) hammer.Hammer heat nothing, I had to use the shop press to collapse mine. It was all metal though. I think from an 88.

Our problem was neither of us were having any luck adjusting this miniature oxy/MAPP setup. Never did get the correct flames but hey, we got it hot.Mapp torch made quick work of collapsing my XJ shaft. I definitely put too much heat on it though cause it got some side to side wobble in it.
O btw idk what kinda plastic they use in those ****ing things but it gives off REALLY bad fumes when you heat it...