Update on broken pin removal. I tried a pick and small flat blade screwdrivers to work at it and was unsuccessful. A quarter inch magnet may have worked but I opted to order a 3/16 x 1“ magnet off eBay for $1.35. After just a few tries, I was successful in getting it out, yay! For reference, I did pick up another locking bolt, which is Dorman brand 81048 that looks like it should work.
The instruction article I reference shows using Dana 60 pinion shims, but there must be a few variations. The article gives exact ID and OD dimensions but haven’t located those exact ones yet. ID being 2.370 and OD being 2.833.