I have a ML-430 that has the sliding roof in it, I think its called skyview?

Well it wont shut or open all the way and is stuck about 1/4 of the way open right now. I have taken the motors out in the rear and they work fine, its just the roof seems to get cocked to the side and jams. I can move it a few inches each way before ti does this.

Anyone know how to get the panels out of the roof or what may be causing this?