@Karl, not throwing in the towel, yet. It took four hands and close to six hours to puzzle the one headlight reflector mount back together. Used a band of Gorilla tape to bodge it together; not the sort of repair that I do, every temporarily.
I will check into replacement castings, as suggested – thanks for the lead. One headlight to go, yet. Work is cutting into my personal time, so I only have evenings to play.