2014 Superb estate panoramic sunroof issue. I tried opening it during the cold weather and it made a scary crunching sound and since won't operate correctly. First time was opening on Tilt and it made the same noise as I closed it. Noise from front right.I think maybe there was ice in the mechanism and something either broke or pulled out of alignment. Closes crooked, does not slide open to predefined place or fully, tilts open crooked (one side higher than the other) and can only be closed using the tilt-down close and slide back close both being operated at the same time. Doesn't slide all the way back to close. Also makes a crunching noise at the beginning of the slide open. Took 30 minutes to close the other day so don't really want to open to take photos unless I'm pretty sure of a fix. Skoda and independant garage suck air through their teeth and say no available parts probably whole new sunroof. I think either a simple part in the mechanism has broken / slipped and the roof needs reseating on runners and resetting. Any suggestions / assistance appreciated.