I have an 2011 3455sa. I have been all over my unit from top to bottom. Last summer I installed all new valterra valves. The tanks drains and vent lines are glued in place. These tanks have a history of leaking from being over filled. The tanks are a 2 piece design glued together at the top. If you have a leaking seam at the top it should not leak while set up as long as it is not filled up tp that point. May leak a little on the way to the dump station though. I have heard of people trying to patch them but a new tank is the only real fix. For this reason I NEVER fill anywhere near its capacity and NEVER travel with anything in the waste tanks.
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2018 Chevy 3500 LTZ Dually Diesel 4x4 CCLB
2011 Montana 3455 SA. 6 point level up. Disc brakes. Curt Q24 Hitch. 5 step glow steps
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS
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