The Thetford Aqua Magic toilet in our Landmark is beginning to leak water at the ball seal and the flush pedal hangs from time to time. Since it is one month out of warranty and we will have to buy a new one we want to look at installing a Dometic 310. Just wondering if anyone has made this swap and if so is it as straight forward as removing the old one and setting the new one in its place with a new seal and hooking up the water supply. Thanks for any help.