New steering coupler doesn't fit!

I want to thank everyone for chiming in on my steering coupler replacement. This website is always the best at helping. I have learned quite a bit from this fix just as I have from many other fixes working on my car. Here's the short of what I've figured out. I'm not sure If it was because my steering box was rebuilt and a new shaft put in or some chrysler manual steering boxes were manufactured different but my shaft has no master spline on it. I have added 3 pics. You can clearly see my first photo shows one replacement coupler I orderd no master spline at notch, second photo beat up coupler I pulled off car no master spline. Then the last photo shows a third coupler I bought that is leaning with a master spline. That last one obviously won't work. To be compatible with steering shaft have to use the first two. Problem as stated the new one is way to tight to slide on. I'll have to clean up the old coupler and reuse. What a pain in the ***. Any comments welcome. Has anyone else ran into this problem where the shaft coming out of their manual box has no master spline area?

Carl