George, I would level the coach than run the slide in and out a few times and see if it will correct itself. If it seats against the inside wall all around and recess's into the outside wall you should be ok. Also when its in check your rollers under slide, you have to get on the floor, and make sure they look ok no split or loose ends nuts tightend.
You have a control unit under your sink or in a closet there is a adjustment screw on it do not turn more than a hair either way very small adjustments if slide is not seating correctly.
You should be still under warranty you need a good Dealer.
How about some KARMA to go along with your new 5th.