Well, last night I sorted a large coffee-can full of bolts, nuts, screws, hinges, and such-like, and in the process found a strap of metal with holes in it, a bolt and a couple of nuts, and fashioned my own. The metal strap is bent into a _/-\_ shape and the bolt sticks up from the high part, high enough to protrude through the pieplate resonator, where it's held on by a screw. The strap ends are held onto the banjo strut with masking tape. It's a temporary solution, but will do till I can find more proper parts at a good hardware store.

Alas, good hardware stores are about as hard to find as this no-longer-manufactured part, it seems. So my temporary solution may last awhile, and be closer to semi-permanent. I do not want to put screw holes into the strut, or I could just use screws to hold the gizmo in place, so I chose masking tape instead of duct tape, since the stickum is easier to remove. If it looks like it's going to be a long time till I can fix this properly, I will at least take it off and re-tape it. Once it dries out, masking tape is as nasty to remove as duct tape.

Thanks anyway for the help. Perhaps I'll run across the mounting hardware I thought I had -- this resonator had to come from somewhere, so I know I had the part at one time in my life.

Bob