Ok chaps, with risk of boring u all to death with me setting up my new van, I think this is my last problem that I need to resolve. my last van got so wet inside, sometimes I had to swill out water from the foot wells. I've sorted all my leaks, but the one prob I can't seem to get over is that water spills out the water tank lid as I drive. I have a 400 litre upright tank which is baffled. I have tried driving carefully round corners and even not filling the tank to within 3 inches from top, but it still seems to escape. has anyone else had this? any ideas!!?