Gray tank doesn't drain
We own a 2010 Jayco Eagle 351 RLSA. The rig has two gray tanks - one for the kitchen and one for the bath. The bath tank no longer drains completely - we need to "dump" this tank every other day, which is not normal. I'm thinking of some kind of clog, but since it's from the shower / bathroom sink, that doesn't make any sense. Any suggestions?
Jim and Carolyn (And Sandy, the Wonder Dog)
RIG: 2010 JAYCO Eagle, 351 RSLA
HAULER: 2010 Dodge RAM 2500 TurboDeisel HD, Short Bed, Reese Slider Hitch