Boss - I'm sorry to hear of your loss. Can you repair, or is it a "total"?

There was another thread talking about the same situation with the GP hinges losing the paper. Definately call and see if a bad batch hit the market. It's quite possible.

For what it's worth - I always use CA hinges and have never pinned them. I've never had one pull out, however, with all the talk about pinning, I think my next plane will be.

I'd be curious to hear what GP has to say about your experience. They're a good company and have always stood behide their products.