When I had the water valve in the city water position it would leak some of the fresh water into my fresh water holding tank. The problem was the valve cartridge stem. There is a newer design of this cartridge out. Ron from Anderson stated that it came out in March of 2015. It takes 5 minutes or less for the replacement. Ron from Anderson can be reached at 800-476-9876. Both Ron and DRV were great in helping me out getting it fixed. This is a video on how to replace the valve,
I hope that no one needs this information but I wanted to post it up in case someone has the same issue.
Happy and safe travels.