WTB: maxim x horn mount & cyl cover bolt

Somehow the left horn mounting bracket broke in half and I'm unable to find them anywhere. According to the parts fiche, the bracket is included with the horn which is unobtanium.
Also need one of the domed Allen bolts that mounts the cylinder covers. I really only need the head of the bolt as the original bolt was broken by the PO and I'm unable to extract it. So if anyone has a broken one or one with bitched up threads that would be fine. I'm not certain but I think the valve cover bolt heads are the same, so a broken one o f those would probably work.
Chacal has good used ones but I'd rather not destroy a perfectly good bolt that someone else might need.

Thanks