I just bought a D50 from someone on eBay (yeah, I know, it was stupid) and it arrived today with a rattle coming from the left side of the body. It sounds like a loose screw or something. Has anyone experienced this? Also, does anyone know if Nikon honors warrantees for products purchased from eBay? The performance of the camera is not impacted as far as I can tell, but I've only shot maybe 60 shots so far, and haven't played around with it that much. Any help would be greatly appreciated!