I am the very happy owner of a 2005 Winnebago Adventurer. My problem RV is daughter's-in-law 2005 Gulf Coast BTouring Cruiser, model 5290. it seems that Gulf Coast wants to keep the workings of that unit as a top military secret. The instruction manual for the actual unit is about as useful as last week's newspaper sales flier. Has anyone encountered one of these design mistakes? I am looking to find such things as the water pump, fresh water tank drain, and the control/power unit for the rear (bed) slideout.