[sourdough]

I'll second what John said.

It is inconceivable to me that you have a new trailer, the shower door is out of adjustment, you bring it to the dealer and they tell you it only had a 90 day warranty on the adjustment so they say "it's a simple procedure but they can't tell you how to do it !!"

I'm afraid you've seen a glimpse of the way you will be treated in the future unfortunately. Any dealer worth their salt would have at least told you how to adjust it; many would have let you bring it in and did it themselves because you're their customer. You need to visit them with a little more "agitation".