When it came to the aileron nose ribs, I had heard that some builders who had already completed their projects were noticing a little buffet on their aircraft when making hard turns so Bob Barrows authorized a rounded nose rather than the sharp contour depicted in the drawing.
Correspondence with Bob confirmed this information with the additional instructions to use a solid 1" aluminum bar as the counter weight in lieu of the lead pipe filled with shot.
Pictured are the layout templates, the form blocks and two of the aileron nose ribs. After cutting out the rib blank, the relief holes for the notches were drilled and then the flanges were formed on the form blocks. I then did a little filing, sanding, and deburring to clean all edges and holes.
These are the aileron nose ribs, awaiting the counterweight hole, alodine and primer.
I have located and cutout the 1" diameter holes for the counterweight installation. Per correspondence with Mr. Bob Barrows, I will use a 1" diameter. solid aluminum bar as my counterweight.