I swapped out the fork from her hf transmission. It was a perfect match.
Now the problem is that I can't get snap ring to seat around the counter shaft. I've tried everything, including bouncing the tranny against concrete to get it to seat. No luck and now all the sealant has probably dried. In the video, this step looked pretty easy.
So I decided to take the trans to a shop and they took everything apart and reassembled and it fit. However, the mechanic also recommended swapping the other two shift forks. I gave him the forks from the old HF tranny that we had, with the warning that one of them was not interchangeable according to the part numbers. I think 3-4 is a different part number.
Nevertheless, it appears that he swapped-out the remaining two forks, which means I now have a D16 trans with all HF forks (only two of which I think are interchangeable). According to him, it bench tested fine but when I compared the two forks side by side earlier, it looked like the D16 fork was beefier, presumably to handle more torque.
I feel dumb writing this, but will using the wrong fork cause problems down the road? I was planning to install this trans on Friday so it's now or never.
The transmission is finally back together and installed, and the car runs and shifts great. No more slamming when you let the clutch out. No more steering problems.
And so it's probably time to sell it. My daughter goes to college in the fall in SLC and doesn't really need a car. That and if something were to break, I won't be around to fix it anymore. I hope we can find a good home for it.