This is what shade tree mechanics have been doing during my lifetime, not really knowing what we did was right: "rotate the hub assembly slowly while tightening the spindle nut to approximately 50 Ft. Lbs.(12" wrench or pliers with full hand force.)
2. Then loosen the spindle nut to remove the torque. Do not rotate the hub.
3. Finger tighten the spindle nut until just snug.
4. Back the spindle nut out slightly until the first castellation lines up with the cotter key hole and insert the cotter pin.
5. Bend over the cotter pin legs to secure the nut.
6. Nut should be free to move with only restraint being the cotter pin."
So hooray for us!