I'm looking for
locking tuners that would directly retrofit onto my Ibanez RG7621. So far the only tuners I have seen that will directly retrofit the stock Gotoh tuners on the guitar are Grover, Planet Waves, Gotoh, and
Schaller locking tuners. I was considering the Planet Waves or the Schaller because they have a thumb wheel while the others do not, but I'm open to any of them. Will these replace the old Gotoh tuners without any modifications, or are there more locking tuners out there that will? Also, if anybody out there has any of these tuners personally, which do you recommend? Also, do they make them in 7-string sets or would I have to special order a 7-string set?