I don't have any experience with slide-outs but I would think something could be adjusted so that it doesn't rub against the cabinet. Have you contacted your service department at the dealership? With it being brand new it should be under warranty.
Hopefully others will chime in and answer your question.
Great choice for "Living within my means" and camping for one...
2011 Salem Cruise Lite 20RBXL & 2011 Toyota Tundra Dbl Cab
Camping History: 45 Trips / 133 Nights / 3736 Miles
FRF Social Group: Campers of the West