As it turns out, everything shifts just fine in this old girl. The main issue is the 1/2 plate needs alignment, it is way off. Other than that, it will shift just fine. However, as probably typical of the vintage, all the plates and shafts are very worn so the shift lever will easily shoot between the plates. I really need that area tight. My issue is mainly how to get that mess out???? I want the whole mess laying on my bench so I can machine a few things and make it right. That looks rather challenging....

I was also curious if there can be any improvement on detents? That would sure help know where its at. I can feel detents but not super firm.
Also, I wanted to ask maybe a dumb question but I do notice that when trying to engage a tall gear at lower rpm, it does get quite a bit of head shake as it takes off. I am not sure what to think about that but never had one do it this bad.

Keep your heel on the floor of the cab when letting the clutch out. Foot in midair if not familiar with tractor will only agravate the jumping.