Just bought the tornado black tank flush nozzle kit from CW. I have a Trail Runner SLE 27 BHK and when I got underneath camper to start installing the nozzle...the black tank is shaped wierd and the template doesn't sit right on the tank...kind of folds over the bottom. Not sure I can get a good install of this nozzle without it leaking really bad. The top inch or so of the tank is larger around than the bottom 2 inches or so. The template and nozzle housing need about two inches of flat tank to install and I don't quite have that. Has anyone successfully installed the tornado on a tank like this? and if so.....how? Thanks in advance for any help.