Universal Clamp Company makes some handy cast aluminum face frame clamps and, I just discovered, some useful accessories. My web searches haven't turned up any contact info; and I wonder if anyone on the wreck has that. I'm not looking for dealers; but a manufacturer's rep might be almost as useful.
I think the company /may/ be in the San Diego area; but that's just a guess.
-- Morris Dovey DeSoto Solar DeSoto, Iowa USA