in trying to clean and polish my dashboard and components, i ended up with a little problem with the plastic face of the speedometer ending up loose and wiggley. apparently the last owner put some kind of calking (that looked like hell) to keep it from vibrating...and when i cleaned it all up it was loose as a goose. is there suspose to be a gasket of some sort in there? in the other gauges also? bill of bill's basket case in kennewick washington (57 300 c)