I discovered that I didn't make the hole in the bottom tailcone skin big enough – actually, I made it plenty big to let the required 7/16" socket get through, but I failed to realize that the tailspring bolt isn't exactly perpendicular to the skin, so the hole should have been one or two sizes bigger in order to let the socket get in there at an angle. No big deal, I just had to dremel the hole into a slightly oblong shape so I can tighten that nut when attaching the tailwheel.
I temporarily bolted on the tailwheel, so that I can use it to make moving the fuselage around the shop easier.
I also knocked together these little legs for the fuselage, and attached them to the wooden spacers that are bolted to the center spar carrythrough:
At approximately 10AM on February 25th, RV-7 #72324 made its first landing! It now sits nice and low so I can just lean into the fuselage to work on stuff. I think those stubby little legs make it look kind of like a KR-2.