My 2006 Bailey Senator Vermont has developed a crack on the hinged flap, cover of the water inlet connection on the side of the van. It is running horizontally along the hinge pin line. My local dealer tells me I have to buy a complete new connection unit at vast bucks. Although I will concoct some sort of temporary repair to prevent complete failure I will need to replace the flap or even fit a complete unit. Anyone got any alternative solutions or know wher I can get a spare flap?