About 3 years ago there was a post on mb on how to make new waste tank gaskets foe the V. I followed the directions and they have lasted until now, however they are starting to leak again. I have tried to find that remedy or fix using the search button 2-3 times and can't seem to locate it. The procedure was to scrap old gasket material out, scrub the area well, then apply this material and set lid back on tank for 24 hrs, then you had to take a block of wood and knock it off the next day. I just needed to know the product that is used to form the gasket.