Hello everyone! My sunroof doesn't seat/seal completely. It pops up and down correctly, but doesn't seat completly in the passenger side rear corner. It's about 1/2 inch below the roofline. It sags or drops to down on the right side. Additionally, there are grinding/cracking noises when I try to open the sunroof to the rear and close it again. Is there more than one problem here? HELP!