A833 Input Shaft Woes
Thanks for all of the great information that followed up this post.
I did find one person through FABO that had a 23 spline, 25 tooth shaft, but I went with a local (Mn) contact I made who had two of them, and is located just a few miles from my house.
Thanks to Chuck Lofgren, part owner of KTRE Engines in East Bethel, MN.
I kept track of my contacts, so anybody running into this post in the future can simply reach out to me and I can source you to a couple of more 23 spline, 25 tooth input shafts that I'm currently aware of.