My wife and I just purchased a 2015 Bighorn 3160 EL Fifth Wheel. My question is does the fifth wheel have to be level in order to extend the slides? We are new to the slide and never extend them until our automatic leveling system say the fifth wheel is level. There may be on occasion a need to extend them when the coach is not level. Will this damage the coach or slides if extended on uneven ground? Any reply would be helpful. Thanks Ron We really like our Bighorn, verry comfortable