Prepared both wheels for mounting the tires by first removing the bearings, wiping off as much of the light preservative grease as I could, then repacking them with new Aeroshell 22 bearing grease. I inspected the wheel halves and bearings, then reassembled everything. Then I mounted one of the tubes/tires. I'll do the other one tomorrow. (BTW, I used a pair of less expensive Condor tires instead of the Goodyear Flight Custom III tires I'll mount after the airplane is flying. The Condor tires will get me though the rest of the building process -- and maybe even Phase I of flight testing. Not sure yet.) Thanks to Jim for selling me his tires.