I followed Don's discripiton. "To make the slots I drilled a 5/32 hole, for the most part about 30 MM from the ends of the tube, and then used the Roto-Zip saw to cut the slots out, then cleaned them up with a file. I used a carpenters square to ensure the vertical pieces were 90 degrees to the bottom of the wing. For the aft wing strut clip, the tabs need to be bent fairly well back to get the right angle for the jury strut coming down from the top rear of the wing. This is easier done off the wing strut. One tab then ends up longer than the other, so it will have to be trimmed".
