People often mention that vintage Gretsches often have issues, and require certain maintenance that seems specific to Gretsches, and does not apply to other vintage brands. I'm curious if we can make a definitive list of: 1. what the common issues are 2. What to look for/avoid with a vintage Gretsch 3. Particularly good/bad model years (should this classification exist) Please excuse my uninformed questions if they are not answerable or worth answering. I have always been under the impression that vintage Gretsches are cans of worms, but want to be more informed before I write them off. Thanks!