All brands of RV's are having Trouble with our model of Dometic Toilet build in later 2005 and 2006. I found this out in Floridia during our 3 month stay. Several other band owners in our park have the same problem. Our toilet worked for one day and then for 3 weeks after repair kit installed, all the owners with new units had the same problem, several were having new toliets installed . Just dropped off our 3055 with Randy yesterday to install a new Thetford toilet (Seem to be meeting some resistance on this, in that they are still was talking about a kit, they don't seem to get to message, that many of these toilets where cast wrong!!) I called Dometic directly they guareeted their kit would fix the problem. In 35 years of using Thetford toilets, we have never had one problem. When a product is built well we stick by them (Sony TV's for 30 years) We will see, when we pick up our Bighorn the day before the Rally.