Dometic 300 toilet with the dreaded internal leak to allow waste to pool inside the outer bowl and smell

I have the Dometic 300 and it is less than a year old. It has a urine smell all the time, no matter how well we clean it. I ran up on some information on a past recall of 300's where the inner seal lets water come from inside the bowl to the outer bowl and settles there until it evaporates, and

Dometic 300 toilet with the dreaded internal leak to allow waste to pool inside the outer bowl and smell

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