Thanks, I guess what I am asking for is responces from folks who have bought a tt and found out after a few showers that there black was full. I have tt that does that so we never use our shower but some of the places we go do not have showers or at least one I want to us, so the new purchase would be for one that is not plumbed this way. I ask every dealer I go to and they all say never heard of one plumbed like that, it shouldn't be like that, mind don't, ect. I have yet to get one to take a bucket of water out and prove it. So I ask on here for some consumer input. Thanks for the reply.