Sunroof problem

[jogi730]

The sunroof 0n my B2 Audi 90 has a problem opening and closing.
I thought the issue was mechanical. However, when the seal is not on, everything seems to work properly. As far as I know, the seal is an OE Audi replacement (fitted at least ten years ago).
Has anyone come across this problem? Any known fixes?
I have heard someone has some replacements, but these were ill-fitting and problematical too. Apparently, there is a GM that fits and works. Any experience of this? Part number?
Any advice would be appreciated.
Thanks in advance.

[quattro estate]

If GM have a seal I wonder what model of car it comes from. I also have a poor fitting metal Sun roof. The metal panel looks ok but the original seal appears to have some wear issues.

[Ian Simmonds]

Sadly the ‘OEM spec’ replacements in recent years have been at best sketchy I know my brother has wrestled with such issues.