This is on a 2010 Jetta. The drain that runs down the C pillar us obviusly clogged, but I cant even see where it is. Ive got a good amount of water running onto the headliner and down the C pillar. Im not sure where the drain is, but I was thinking of coming in from the bottom with some kind of snake? Or is there a chmical solution that would maybe unclog the gunk? The drivers side seems to be OK, so Im gonna try to pour water in that drain and see if I can locate where it dumps on the ground and try to snake some weed eater line in there. Any other thoughts?