Hello all, Have purchased a 2004 Keystone Montana. The sink keeps stopping up. My grey water valve is open. Shouldn't this water go right out? My black tank needs pumped which makes me wonder if th...
I TT Keystone this morning. There is not a 3rd valve on this model. They say I simply have a clogged sink and proceed accordingly. Again, just bought and set up the unit so there may have been a problem prior to my discovery. Taking off trap next.