Our last vans have all had excellent drying rails incorporated in the bathroom skylight, simple metal fold down contraptions that give you somewhere to hang wet towels so the water drips into the shower tray below. There is no such thing in our Carthago, but are they retro fittable and if so, where can I get one from? I don't want a pull out retractable cord sort of thing just a solid rail of some kind, but can't find anything in the usual places. Has anyone fitted one themselves?