B544 Classic A class, 2003. I've been trying to track the source of this leak for over a year now. The top of the dash on the rhs just under the bottom corner of the windscreen is getting very wet in heavy rain. The only way I found to cure it last year was to apply Sticks Like Sh*t clear sealant to the top and bottom edges of the outside of the windscreen rubber over almost the entire right hand side of the screen. But the Sticks Like Sh*t perished in the sun after a few months, so I applied Indasa black windscreen sealant to the upper and lower corners. It's supposed to be good stuff, but horribly messy to work with. I thought everything was okay, but we had a dry summer and now the autumn rains have arrived with a vengeance (a prolonged downpour all of today) the wet patch has come back. Is this a common problem with Hymers? I just can't work out where the rain can be coming in. I know the only permanent fix is a new rubber seal, but I don't want to take the risk of the fitter breaking the screen when he takes it out.