Has anyone given you an answer on why the black tank is retaining pressure? The tank is vented and should not be pressurized forcing the water out of the P-trap.
I have a 2015 Vegas and all Vegas/Axis bathroom sinks drain to the black tank. In fact many other Thor models also drain the bathroom sink to the black tank. I have never had a problem with black tank oder. We have over 15000 miles on the RV and have never experienced any oder coming up through the bathroom vanity sink drain.
In your post the 4 months that was spent "fixing" your warranty issues -- was that at the dealer or the factory?
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Ed & Bev Felker
Retired USAF Col and retired Nurse
Traveling with Lily & Bella ('Teddy Bear' breed)
2015 Vegas 24.1 (E-350)
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