It was brought to my attention that some of the 40's guys who are restoring their rig are having issues with old, broken, cracked, or missing knobs. I actually have no idea what "knobs" we are talking about or what they look like. Is there any interest in me making some factory replica knobs? Any pics of what these knobs look like? Sorry if I'm using the wrong word. I don't own a 40 series so I'm not entirely sure what I'm asking. I'm hopeful you guys know what I'm asking.