The first thing you want to do is ensure the weight is roughly equal side to side. Measure front axle both sides, and rear axle both sides. The weight can be mismatched at the factory due to the comparative weight of various slide outs. It can also be mismatched depending on what you carry in the storage compartments and how you arrange it. It is a good idea to plan your storage cabinets accordingly to the extent you can. It's likely that a difference of 400-500 lbs either side could account for an inch or more of lean. Of course, this assumes there is no assembly defect with body-to-frame contact, which ought to be covered under warranty. But before simply dropping it off at the shop with a complaint that it's leaning, and assuming they will cover it all under warranty, I'd do the homework to ensure you aren't too heavily loaded on one side. Their "fix" will probably assume you aren't willing to relocate heavy items, and they might likely charge you for it as a modification rather than a defect.