Thank you for posting this, as I'm tired of people treating me like a dumb blonde when I mention it. I went to the parts guy where we bought our RV and asked if they made keys. He said, yeah why. I said because my deadbolt and door key are two different keys and the trailer only came with one deadbolt key. He said, that's not possible, the same key fits both. I said no it doesn't it's two keys. He again said, no the other key is for something else, the same key fits the deadbolt and the door. I got angry and said, Dude, I'm not an idiot I know that it takes two keys to open the door. He said, OK then, but the key machine is broken anyway.