General Skyroof help

[Travis9599]

So last week my sunroof worked fine and now when I try and open it it makes a horrible clicking sound and barely opens the first window pane. I’m guessing it’s some kind of gear that’s worn maybe? I’ve tried to open/ close manually but it still makes the horrible clicking sound and feels as though it’s slipping. Does anyone have some sort of write up on this or a diagram to show how to disassemble the motor etc? And help would be greatly appreciated thanks