Do this at your own risk... but I've done it, told to me by guys who have.... I guess some little bit of knowing if you're going too far is needed ....
Ya know how you need a little block under a hammer, if the nail is stickin out a few inches, and you wanna pull it? Ok same thing.
I've taken a phone book about an inch thick. Gotten a towel, laid it on a guitar, put book on towel. This assumes no strings or anything.... You get the RIGHT SCREW to go into the studs - metric or US thread, depending on the bridge. Then you use the hammer's "claw" to lift the screw, and stud... straight up. When you think its gonna tilt, readjust the length of the screw and or add a nut on the screw and or readjust the hammer position. You go slow and easy, not jerky. And ... they come out of Gibsons.
To me, W uses a hole that is somewhat undersize for really hard wood, and just right for mahogany or soft wood like basswood... I open them up a bit, carefully, and even then I'm probably using too much effort to seat them. G's seem to slide out just fine.
Note - if the hole is too big after you remove the stud, just use the magic hole tightener to build up the walls of the hole, constrict its size and make things fit tighter. That product is SuperGlue, but... I'm tellin' ya.... let it dry for TWO WHOLE DAYS before you stick that stud back in there, or its not coming out, except with splinters attached to it, the table, and you.