Puma vent problem
Has any had grey water problems with their Puma 32RBFQ (or similar)? I'm have a problem with water backing up in the shower (while showering and while draining a sink). My troubleshooting has identified the problem being the grey tank is not vented. I cannot see where there is a vent connected to the tank. The grey roof vent connects to the drain line between the kitchen and bathroom. The black roof vent goes directly into the black tank. There is a small chance that the black vent T's under the subfloor and also connects to the grey tank but I can't confirm without cutting a hole. Assuming it doesn't exist, I don't know if this is an error in construction or a design flaw.
I contacted Palomino a week ago. Someone was supposed to get back to me in 2 days but I still haven't heard anything.
Thank in advance for any insight/experience you can pass along.
2018 Puma 32RBFQ