Help! I purchased a 2008 Pathfinder three months ago, brand new. I'm already having some noise issues. Recently, the sun roof shade has been making this annoying rattling sound when fully closed, while driving over even the slightest road bumps. The shade needs to be fully open in order for the rattling to stop, but I'm not happy with that. I can't keep the shade open in the summer to have the scorching sun burn my scalp. Is this an ongoing issue, and is it repairable?