Yeahbut . . . it's a bit late this time around.

First, I think I read somewhere that most of the Japanese stuff is built with JIS fasteners, not Phillips, which means that Phillips bits don't mate with the fastener correctly.

Second, I always install servos in tight places so that it can be removed with relative ease, meaning I don't have to diddle with the servo in situ. For example, the photo shows aileron servos installed on their side, in a mount. The mount rails are red oak, drilled and tapped for the machine screws. The bottom of the wing has a balsa cover plate. Four screws to remove the cover plate, and four more screws to remove the mount with the servo still attached.