When you take you're instrument out of the case and play it for a bit, only to find some new mystery scratch running down it. This has happened to me 3 times now with my new Bach and I know I didn't scrape it on anything. Is the case a possible problem? I've heard it could be from one person, but I'm not sure if I trust them. If if it is then that's incentive to buy a Torpedo Outlaw bag.