Thanks everyone. The integrated bearing seal had me confused for a moment. Did my best to get the grease (Mobilegrease 28) inside the bearings, past the rollers. Torqued the nut until the bearing seal just stop turning and then advanced to the cotter pin opening. As others have noted, I installed the air inlet washer and nut on the nose wheel tube and only the washer on the main tubes.
Now I just need to figure out how to get the two brake line fittings to go into the landing gear, seems like the factory paint is interfering.
Jeff