We purchased a new Crossroads Cruiser fifth-wheel this spring and have noticed that the fresh water tank (58 gals) shows full even when the black and 2 grey tanks (40 gals each) show 1/3 or higher. This has caused us some concern since we do not know how much fresh water we have unless we do the math on the black & greys. The dealer has checked the gauges and says the sensors in the fresh tank are close together and therefore all is normal. We do realize that the gauges are just that - to give you a rough idea of the water levels but... Are there others out there with similar water problems or is it our Cruiser?