Brief Description: Set up flap for attaching bottom skin
Smell twist in flap - I think. Tried weighting it on one end and twisting at other end to try and correct. Not much change. Problem 'may' be the attach bracket / angle bracket geometry - slightly unaligned?? Proceeding with back riveting final rivet on top skin - using long bucking bar, taped rivets held upside down and using modified chisel (ground down) to reach inside flanges of rib and drive with rivet gun on shaft of chisel. Worked pretty well.
