Hi lee
I have managed to put in enough wd40 to stop a ship from gettin wet

inside the sunroof workings and have now managed to get it to tilt.
I have invested in some industrial strength grease (bargain from e-bay)

to try and lube up where the metal wind deflector is once it is all the way open...And what im hopeing is that it will then slide as well..
Will keep you posted.
If this works do ya think it might be a good idea to post some pics so i can show where i lubed just in case someone else has the same prob????
Regards
phil1973