It sounds to me like you might have a height adjuster valve stuck in the open position and your airbags are not inflating proper which is giving you the rough ride and dragging to low. Even though Monaco coaches have always road kind of stiff because of the ten air bag system. You also have air gauges that will show how much air you have in the system. I usually will not move until the pressure goes up around 120 lbs on both gauges. Do not drive off with the airbags not inflated, it could cause some damage to the drive shaft U-joint because of too much angle.