On my 83 300D, I've recently incountered a problem with the windows not working. The driver's and rear passenger side windows will suddenly stop rolling down. The fuse is fine, as I know those two windows are connected. To get them working, I have to pop the fuse box, and take the fuse out, and then put it back in. do I need to burnish the fuse with an eraser, or such? Or could it be another problem that I'm overlooking? Thanks for any help, it's hot out here, I need windows!