Worked on torque tubes that operate retract gearbox. Cleaned up surface discolouration and burrs. Realigned ��ingers��on end of damaged torque tube. This tube was damaged in the accident. Obviously from the RH wing which was destroyed in the accident. The universal joint fingers on this tube were spread slightly and tube was bent significantly. I won't be able to reuse this tube and to machine of a new tube would be quite an undertaking. These torque tubes are also beautifully made. The assembly is comprised of two tubes, one sliding inside the other. The inner tube has external splines machined partway down the tube. The outer tube has matching internal splines machined at the end of that tube. The tubes slide in and out and when connected on either end, the splines line up such that when the inner tube is turned, the outer tube turns as well. No play whatsoever in the assembly. To get the splines in the outer tube, they would have started with a thicker walled tube and machined it down to a smaller external diameter except where the splines are. A lot of work. So I'm going to have to figure out a new way to actuate the RH retract mechanism. Besides, one of the universal joint balls is missing. It's long gone. Checked the condition of the bolts that are part of the torque tube. Other than a bit of surface rust on the head, they are in good condition. Removed the rust, repainted and then sprayed the bolt shank with surface protectant.