The lug seat stay cluster finally let me in

Spent the morning fighting a seat stay cluster that wanted nothing to do with me. Then somewhere around the third file pass it just... yielded, like the steel decided we were done arguing. It keeps happening — the doubt sticks around but the metal always tells you the truth eventually. Anyway, that joint's going to hold up for forty years now, and I get to pretend I knew what I was doing all along.