I assembled all wheels which was uneventful except that I tried to fiddle with the rubber tubes with too little talcum. Not a good idea. First, get lots of talcum then start putting the wheels together. A little tricky to get the valves in right positions but other than that no problems. Likewise, the installation of the fork and reinforcements was easy. Also, took some care to assure that the wheel sat tight on the axle and secured the wheel bolt with safety wires.