Hi There I just bought my 2008 B7 Cabriolet, and the roof worked during the test drive. However having tried again on my own, the roof only opens a few inches then stops. The dash also has the roof light flashing on startup (but it disappears). The guy I bought it from said "fiddle around with the roof storage tray in the boot" - I have tried this but no avail - anybody have any clear instructions for what to check in the boot? First ever Cabriolet so detailed guidance appreciated for a newbie! Thanks!