@H2O MAN,
I am glad I found H2O Man's forum even if I'm not sure how to start a thread or anything yet.
I am having a similar problem. My parents have a RainSoft Gold Seires, installed in 2000, which was upgraded with the EC4 Valve in 2009. The nearest service man is over 2 hours away, and too expensive for their fixed income. As best as I have been able to determine, working with the limited information in the file on the unit, the brine tank is not working. It appears that there is no flow in or out of the tank during a regeneration cycle. I am reluctant to just start taking things apart, especially without a good diagram of the brine tank float valve and related components. Any help is greatly appreciated.