Drilled and installed the tailwheel spring. The all-metal lock nut is welded to the top of the tube so that the bolt can be tightened without access to the nut (don't try welding a nyloc nut!). Underneath, a section of 1" * 0.065 tubing is welded as a doubler for the bolt head. The HS spar carry through tube was also welded in place. This was not easy as the central section is 0.090" thick and the fuselage tubes are 0.028"
