As a side note, we ordered a 2018 Winnebago Navion the first of July, and were promised the delivery for the second week of August as they had one started they could adapt to our options. We had a trip planned up north for the end of August. That delivery was pushed back to End of August, then mid September, then end of September, and the straw that broke the camels back (aka: our order) was when the Winnebago rep called me direct and said sometime in October. I asked what happened, as he said they would build it on a 2017 chassis, and he said " We are having chassis issues". That was it for me and I cancelled my order and got the deposit back.
I then found the 2017 Leisure Van Serinity, one in stock the way we wanted it, so bought a 1 way ticket 1250 miles away, and will start driving it home Friday.