I have another classic car that has mechanical turn signal switches. When I slow down to turn the corner, the rate of click get slower and slower to the point of ceasing altogether. I was told that this switch was mechanical (vintage 1962) and that it was just tired. I suspect older Imperials have similar types. Has anyone ever rebuilt something like this, Imperial or not? Can I open it up and refurb it, or must it just be replace, OR is that just the way it is? Thanks gurus. Chris