I agree with you dbacque. Just make the triangle slots the same as the square slots on the formers, and resheet with the 1/16th. Probably will make the fuse stronger besides. I have not seen this triangler wood used for stringers before, and cannot think of a reason for doing so. Most of my repair use of triangler wood has been to strenghten fuse sides and bottom sheeting when the glue line between the two are loose, or weak.

Let us know how the repair works out, and a view when the stringers are installed.

Rich S.