To update:
Regional RH guy came. They fixed a couple floor pops/squeaks which I appreciated. He looked at the dishwasher situation and told me that the parts are on order and I already have an appointment for the cabinet people to fix it up on January 2.
The stairs.
Oh the stairs.
I made the house completely silent before I asked him to go up them. And sure enough, as he goes up them, every single stair sounded as if it was bending/cracking under his feet. It's not super loud, but then again it's not silent. It sounds as if they are under stress.
He said they are totally level as they are made in a factory so he doesn't think they have fallen forward, just that the padding and carpet are matted down.
As he assessed them I was fully prepared for him to tell me it was normal and to wait it out...
But he thought they were somewhat strange too and decided to call and schedule a crew to come out and pull up the carpet. They are going to nail down and GLUE every single stair topper thing...what ever it's called. That ought to keep them quiet :)
I'm happy with this resolution. I don't want 80 year old stairs in a 4 month old house.
He looked at my list of issues I've been writing down and everything else is stuff for the 10 month fix, and the drywall fix at 1 year. They also fixed my driveway where it had crumbled.
Happy camper!