VeloBase.com - Component: Campagnolo 1044, Record
I have one of these, never a problem for decades...also have a Zeus clone on a bike and last night one of the bolts on that one came loose on a ride. Of course I didn't have a 10mm spanner with me, so I limped home with it rattling, stopping every so often to get it finger tight.
I think I put a little grease on the threads when I assembled the bike. Was that a mistake? Perhaps I just didn't have it quite tight enough, or got the clamp angle slightly wrong? Any other ideas? I'm not sure I'd want to put loctite on it, as it's nice to have it adjustable.