My new to me bike only has 8500 miles. I like it but noticed saddlebags seem loose and bounce around some. Was following my buddy riding my bike. What can be done. I know it's design is to easily remove the bags for a different look. I won't remove them except for cleaning. Has anyone built brackets to make them more solid? The rubbers in the mounting brackets seem good and the quick release latches are locked securely. Thanks for your advice.