both rear ballast filling up automatically

[BOATMONKEY]

have 2009 Rz2 with stock ballast
took boat out 2 times over this past weekend. never touched the ballast switches. after pulling boat out of water both times i flipped the switches to empty and they both were completely full. anyone experienced this? i know they werent on because they would have overflowed and i would have heard and seen that.

[chpthril]

The free fix, and it usually works, is to reroute the fill hose so it loops up higher then the tank. This creates an upside down drain-trap effect. If that doesnt do it, then a vented loop in the offending hose will be needed.

[Kight & Christine]

We had this issue when we bought our boat. Tige fixed it for free because it's a known defect.