I replaced mine in January 2015. I can't believe I lived with the original one that one. Notice in the picture of the original one how the cold water valve is all the way to the back. This is after replacing the valve assembly a couple of times.
Now I over did this a bit and replaced mine with a Kohler that wasn't cheap, but I full time and "I'm worth it"!
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof