While working on our new 19' today I found something people should be careful of. The front passenger window will touch the door window if your not aware of it. If the wind should catch the door while opening it and the window is open there is a potential you could break a window. Just make sure you latch the door open before opening the window.
Hopefully this will save someone from having a bad day.
I don't know if any of the other models would do the same thing.