Saw my first 2018 Anthem and noticed that the DEF door on the drivers side was improved.<br/><br/>In the previous years models this was a plastic door with a lock. But on the 2018, its a solid metal door, and thick as well. I don't know if there were some thefts of DEF that prompted the change, or simply a way to make the door quality match the coach quality, or if it was...