I am getting ready to go full time and am still researching different brands and floor plans. On some other brands forum sites, they seem to have problems with the black, grey, and fresh water holdings breaking where the supply lines enter the tanks. There seems to be lots of theories about what is causing this to happen. My question is, does this seem to be a problem that Hearland is having particularly with the Bighorn models? Any responses would be greatly appreciated and thanks in advance.