Began fabricating the F-837 rear control column hanger amd F-838 spacers. After cutting the large aluminum angle and making the big diagonal cuts in the F-837, I had to stop because the 6" sanding disc on my disc sander has worn down to the point of being ineffective, and I didn't have a backup supply of discs. A quick trip to Lowes fixed that. Cut the F-838 spacers from 3/4 x 3/4 square aluminum tube. They'll be sanded to final length tomorrow. I also marked the rear corners of the rear floorboards with the footprint of the flap actuator mounting blocks. This floorboard material will be removed, so the blocks will rest directly on the underlying structure. This will allow the floorboards to be removed without removing the flap mechanism first. Seems logical to me, and several other people on the VAF website have done it already.