Here's a straight key foible I didn't know existed before today. I obtained a FB Junker key on the base with the hinged cover. I immediately noticed it sounded like it had a dirty contact. Ran a strip of paper through and it removed some dirt. Re-adjusted and used again, seemed to be ok/better. Had the symptom return today so I dis-assembled it to find a coil of fine wire in a recess in the cast base. The coil is between the key contact and positive key line terminal. I installed a strip of mag wire acrossed it and the raspyness is now absent. Why did Heir Junker add this coil? Signed; Clueless in Columbus.