Match reamed to #30 all of the F830 and F831 front seat floors. Well almost, still need to drill the floors to the longerons. Started to mount the F837 aft control mount but discovered the AN3 bolts would not screw into the nutplates. After a bit of investigation, I found that the QB construction folks used K-1000-8 nutplates instead of K-1000-3 nutplates. Before I remove the floors to drill out the rivets in the 4 nutplates, I may work on the flap bearing blocks. Also, began on the rotisserie tonight. Picked up a 1000 lb. capacity, 4 wheel engine stand today from Harbor Freight Aircraft Tool Supply. Bolted it together-left off the front wheels to get the mast perpendicular. Will pick up some angle iron tomorrow and hopefully get er done.