Thule Omnivent lid removal

[Lyrick]

Can anyone tell me how to remove lid of the above ? I need to replace it , part 6 in the exploded diagram , and I can't work out how to remove the winding mechanism which sits in the top frame , part number 22. It comes already attached to the new lid so need to remove the old one.
Thanks

Patrick

 

[Lyrick]

Sussed it

 

[Razamataz]

I too would like to remove outer part No 6.
Do you have any information to share?
Pretty Please