Sunroof/Moonroof Adjustment.

[Macca]

Hey guys, so I've noticed when my moonroof is closed it seems to have loose movement up and down at the back of it. When its in the tilted position it doesn't have this movement so it seems like it may be worn bushes or something? I noticed it one day when I had the roof closed and went over the usually crap QLD roads and heard it clunking. Has anyone else had this problem and fixed it?

Thanks in advance guys.