Talked with the factory rep at Forest River. Thge hardwood floor can be 3/8" in hieght. Although he did advise running the boards lengthwise to ensure support. If you remove a resister and peel back the alumimum tape you will see how the floor is constructed. Styrofoam sandwiched between two very very thin pannels... this compacts over time and does not provide proper support.....
Don & Dona W/yorkies Gizmo, Master Chief, & Tali
2011 Flagstaff 8528 BHSS 2015 Ford 6.7 XLT
2010 Full Timers & Still Going