I have a 2009 American Allegiance with a Navion R5000. Everything works but my side-view cameras seem to have a sun spot and the picture is foggy. Is there any way to clean these, or do I need to replace them? I want to remove them to clean them. It will be a small project ... they are in a cover. I do not want to do if it will not clean. Anyone know what brand of camera they are?