hi, guys, ive just joined today. hoping for a bit info,ive just bought a fiesta mk3 on a g reg,& the factory fitted sun roof leaks bad. the rain channel fills up, then overflows in to the car the seals look ok. there are 2 drain holes at the front ,which i am told are connected to tubes , which run down inside the door posts.where do these tubes exit? somewhere near the front wheels? as im told they may be blocked. can anyone help ? thanks .