Replacement tuner buttons for Fender mandocaster?

[Dave Richard]

I have a '57 here with a crumbled button. It seems that the undersize buttons are not available as replacements....but does anyone know of a source?

[Joshua Levin-Epstein]

Would these work?

http://www.stewmac.com/Hardware_and_Parts/Tuning_Machines/Tuner_Par...

[Dave Richard]

I ended up ( with the owner's agreement) using some buttons off old, donor Kluson guitar tuners( the shafts were bent) . They look fine, and work well.