What do I do with the first 4-UNI torsional wraps when I get to the leading edge?
Scissor-trim the edges to be either butted together or to within an eighth-inch or so, but try to avoid overlapping the edges. The gear legs are airfoils and you want the leading edge to be smooth. Nothing critical will happen if you do overlap, but you will end up with an unwanted bump and a cosmetically challenged gear leg. If you do overlap a few fibers, simply sand the overlap under the leading edge is smooth (which you will have to do anyway to get rid of the 5-minute glue used to hold the strut on top of the nail heads).