Deburr 904 spar and 904H plates.
Start deburring seat ribs. Takes 5 minutes per rib. 5 down, 5 to go.
Start match drilling crotch strap brackets. The instructions show a cutout needed in the 940 and 939 seat parts. But those cutout were already done in my kit! Sweet! That makes it just a matter of centering the brackets in the cutout, getting them square, and drilling. I found that getting the rear bracket perfectly centered on the matching holes in the seat provided the best centering. Tomorrow the brackets will be match drilled to the ribs.
