Just purchased a VW Multivan, 2005. The sunroof leaks! The mob I purchased from says no warranty on old car. Went to local VW dealer for repair, cost $ 165 to diagnose leaking sunroof. Quote $5500+ to fix!! I can't afford that, so will try myself. Does anyone know where the sunroof rear drain tubes are located and where they drain to... I can sort the front ones out, just needing help/ diagrams/ anything to fix the back drains. Thank you