[Cbrandt79]

Hello fellow Montana owners

We have a 2021 3120rl legacy and I am experiencing sewer odor that I cannot get rid of. I have removed the cap on the roof vents and flushed with water. When I dump I use one of the camco rhino blasters I wash the tank with this 3 or 4 times with a water gauge putting 10 -14 gallons of water in tank then dump. Usually runs very clear/ clean on the last rinse.
I also removed and inspected the air emitter device under the sink in the galley. We have a splendid washer and stack dryer as well. Wife runs it constantly! We were full time for the last 3 years. We have been in Arizona for the last 6 months. We use happy camper and also put at least 4 gallons of water in tank after dumping.
No signs of leaks! Any suggestions are really helpful and appreciated