Anyone know if Sperzels (or another option) are a drop in replacement for the Hipshot mini locking tuners? My Modern 7 has the Hipshots, and while I'm not having tuning problems with them, they don't get along with the wall hangers I use. (Putting the guitar on the hanger bumps the lock wheel, and the bottom string keeps unscrewing).
Here they are vs. Schallers, which have a different location for the set screw.
And vs. Sperzels, which look like they may cover it:
Nope. Nothing. You need to shim them.