Not that I use my sun roof much in the Colorado Winter - but I was wondering if anyone in the colder climates have experience a bang or clunking sound when you open your sun roof - I am hoping this is a cold day issue - but haven't had anything over 40 in weeks to see....

When I open my sun roof (retract - not tilt up) - it appears to catch on the back middle part of the roof as it just goes down and then bangs but continues to open... Just as it lowers the rubber moulding appears to catch....