We bought new travel trailer in **** with a Dometic *** toilet. Not long after we had a...

We bought new travel trailer in **** with a Dometic *** toilet. Not long after we had an odour that has been persistent ever since. Found out this summer there have been issues with this model toilet. Removed the toilet last Friday and when tipped it to look at bottom old urine, etc. Started leaking out from where bowl connects to seat. Now know where smell issue is. I took it apart and the inside was gross and odour is what we have been smelling since trailer was used for less than two weeks, back in ****. We have had trailer back to see if was a odour stack issue. I had sent pictures last Friday to the Dometic.com site showing the interior and the model sticker serial numbers, etc. My wife said we are not reinstalling this toilet but need something done quick so can winterized the trailer. The toilet looks brand new on the exterior but can’t believe the interior would be able to get waste in their that can’t escape. We are wondering what you can suggest doing. I did google the issue on UTbe and found where other models of Dometic toilets do not have the ***’s issues. It would be appreciated if someone could get back to me ASAP. We should not be having to deal with a problem we had no idea was the fault of the toilet for our smell issues since it was new.