My wife and I are taking delivery of a 2016 Bighorn 3750 FL in Jan. We live in Oregon. I did not order dual pane windows on this unit. We have a Durango 38' 5th wheel made by KZ that has dual pane windows, we bought it new. Within 6 years 5 of the widows were going bad. That's the main reason I didn't want dual pane again. Any thoughts on this?