I am restoring a 1972 750 four. The PO had done some creative wiring to accommodate a Vetter fairing which was removed so now the bike has no front turn signals. I have turn signals but I don't have the screws that hold the lenses. A small item but I am having trouble finding them. They seem to be 3mm X 24mm and all I can find in the smallest size are 4mm. Anybody know of a source?