Always possible to hollow out leading edge between ribs and reduce weight some more. Stress risers in bawsa? They seem too fibrous and discontinuous. When ribs are zapped with good cement, seems to me that would be a strong 3/32". Thin CA fanning out into wood surrounding the joint, would definitely add strength. Wings are prone to break right after the sheeting in the center section, in any case. Or in the center, if the trailling edge lets go. Also, those notched leading edges are out of fashion these days. Aren't they. The saw looks good to me. Nice to jig up an even depth. My last notched leading edge was eyeballed. Not as even a job as the one above. By no means.