Appreciate it Cili. On the way home from work I picked up a 1 3/8" socket (actually I had to buy a set, but it was HF, so whatever). Tonight I torqued the bottom one to 80, and the top to 100, per the Spicer manual. That knuckle is very hard to move. I had to use a lot of force to move it at all. Does that sound odd to anyone. I can still turn them, but we're talking some pretty serious effort to get them to move.
Oh, and a note for anyone else doing this for the first time......in the Spicer manual it says to tighten the top nut first (to pull the studs of the bottom socket into the tapered hole of the yoke). Yeah, you gotta do it in that order. Before I read, I was turning, and turning......trying different ratchets.......finally I realized the little slit on the top was turned, which got me paying attention....which got me to RTFM! Tighten top, torque bottom, torque top - and that knuckle is TIGHT to turn when you are done.