the guides are the bits round the edge of the sunroof opening where the water goes before it does into the tubes, as just said, now check the seasl round the edge of the glass, my old one was spilt too and leaked, they are pretty expensive to buy, cant remeber but think about 40 notes, stu g will kno if he just got one
you may have put a hole in the drain tube, but i would think that would be hard to do, are u also sure you got all the crap out of the tubes...