Greetings from Switzerland! 
I am one of the moderators for the Audi TT UK Form and just found your website. If there are any other TT Mk2 Roadster owners who are having problems with the operation of the convertible top , we have a lot of good information we are happy to share with you.
The Ultimate Audi TT Mk2 (8J) Roadster Compendium
https://www.ttforum.co.uk/forum/viewtopic.php?f=19&t=1813258
Cheers! SwissJetPilot