I have done so without pulling in the slides since we tend to sit awhile in one spot. I haven't noticed any ill-effects from doing this either. I would imagine a lot of other moc'ers will tell you it's okay or that you can also just go into manual to do some adjustments and I have done this as well. John
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.