I have given up on the driveshaft. It is going to a driveshaft shop or a machine shop to get a new carrier bearing and universal joints. I took back the parts I bought, minus one u-joint that I think I damaged, and got a refund.
This week my self imposed deadline will pass. I wanted to have the truck road worthy to drive in the neighborhood July 4th parade. Maybe next year.
I am still trying to make some progress on the truck this summer, so I picked up a set of rear shocks and new mounting hardware this afternoon. Within 20 minutes of getting home with the parts I was putting tools away. Hopefully I installed them right, 'cause I know I installed them quick.