The floor needed to be redone, as the bulkhead A rivet line was a few thou' off when everything (sides and roof) was clecoed together. Not a big deal. Getting teh final rivet line correct was the most important, as I essentially needed to stretch the floor taught. To acheive this, I supported the tailcone really close to bulkhead A (in addition to the cabin), so the tailcone's weight would help put the top and sides in a little tension. All worked pretty well.