Water Supply Valve 2002 Monaco Diplomat

Monaco installed a two way water valve; turn one way supplied water to coach - turn other way filled fresh water holding tank. It started leaking water into fresh water tank when it was supplying water to coach and over filling it. It was a SWAN and still available on line $142.00 + tax & shipping. After studying how to change it out I realized there was no way - ended up cutting value out with a air cut off tool and building a new manifold from 1/2" copper pipe and to ball valves. Has anyone else had this problem?