Thanks for the replies. I haven't had any luck as of yet. I havent had a few spare hours to work on it in between fulltime work, fulltime study and interstate travel. Flat out. I'm really hoping to avoid having to take the roof lining and components off.

I have tried a lot of WD40 around the mechanism - No luck.
Tried some solid pushing and maneuvering while my GF works the switch. The most I got was about 2cm of mechanical movement, then nothing.

Unless a miracle, I'll have to take of the lining and play with it. Thanks for all the replies and I appreciate anymore. I'll post feedback when I get some success.