Yesteryday, I did something rather radical.
I noticed that the passengers shoulders were 'in' the side door panels. I went out and measured my own car which was far more then a normal plane, but had an idea of what to work with, (60 inches). So I hid all the non-concerned parts (little knobs and landing gear, etc), and kept in all the hull parts (doors, inner doors, interior cabin walls, fuselage, wings, etc), and then used FFF3x3x3 on it in Gmax and scaled out the cabin area only until their shoulders were free of the inner door panels.
I had to do that twice. Once went to 60 inches and she looked pregnant and to much room on the sides inside. I rescaled it again (thank goodness for continuous saves during the process) and rescaled once again, only enough, and Voila.. I went through and cleared the scales on the parts involved. The second of three exports during the processes, I got a OBED scale error. I went back a step and rescaled 'all' parts from the scaling process and the OBED error was gone.
The fuselage was already mapped, so doing this was risky, but it worked out nicely. If there were rivet patterns, then I would have to remap the girl. She is composite though, so no worries..
Thank the Lord for that FFF3x3x3 tool!
Bill