I have a new Fleck 5600 softener. I've read that the water level in the brine tank should be below the salt level. Mine is not. My water level is a good 6 to 8 inches above the salt. I added another bag of salt before it cycled last night, but the water level is unchanged today after the cycle. Perhaps related (or not) I don't think the water is getting as soft as it should. How do I adjust or troubleshoot this water level problem. Thanks