Help...the volume knob on my spoiler is loose. It's securely attached to the shaft. If you think about it as being the face of a clock, the normal turning spectrum would be from 2 to 10. When it should come to a full stop at 10, it keeps moving...ahhhh! I'm woefully ignorant regarding the interior guts...I only take the back plate off to change the battery on occasion. Any help fixing my old friend of 20 years would be most greatly appreciated. Thanks...
Paul