The Gotoh 510s are excellent tuners. A few years ago I decided to move the Waverlys on my 2001 VJ to an old Martin I sold. I replaced them with a new set of Schaller Grand Tunes. Can’t recall the exact size of the tuner shaft hole but I used a drill bit that fit perfect. From the back of the headstock just lightly tapped the bushing out no problem. Sometimes the compression fit can be difficult and need the StewMac tool (or a luthier).
Every tuner swap is a one-off in my experience. bert