I have many Basses and guitars and do almost all my own repairs. But I just got a 1980 Fender Mustang bass and each of the Tuners have a tight spot .It is a problem between the Tuner Paddle shaft and the clevises that hold the Tuner Shaft to the mounting plate.One tight spot per revolution.And each individual tuner has the exact same problem. If it was just one Tuner paddle that had a tight spot I would figure it was just that tuner. Since each tuner shaft has the same problem it seems that is is a design problem. Has anyone figured out a way to free up thet tight spot?