Some people have mentioned that Schaller makes modern tuners model that is a direct replacement for Vintage Kluson tuners. Apparently with this model no modifications are necessary. Does any know where I can get them?
Schaller makes some Kluson-style tuners with screw in bushings. BUT, it is a horrible design! The backs have a tendency to separate from the mounting plate because of the way they are made. Maybe they have a new design now (?), but the ones I have dealt with in the past were garbage.
Go with the Gotohs, they are not perfect, but the best Kluson clone currently available.
If you have the coin, the open back Waverly tuners are probably the best tuners on the market today, period. Extremely well made, but they are very expensive.