2003ChevyCav

Hey guys I am kind of new to the Cavalier world but I am having an issue right now with the sunroof. Everything slides ok, but the glass isnt aligned on the rails right. When I shut it the drivers side appears to shut completly but the the passenger side is back about 1-2 inches. And vice versa when I open it, the passenger side looks like its open all the way but the drivers side is forward 1-2 inches. Kind oflike this since I dont have any pics -- _ I already checked the tracks and nothings on it. I also cleaned them with white lithium grease to be sure. I would love some suggestions. Please help!