Spring and a ball - sounds like that provides the detent for the selector switch. Unscrew the handle, remove the ball and spring, then try lightly tapping the selector switch out from the drive square side of the ratchet, using a punch. If you're getting slippage, you've either got dried up grease, or a worn out ratchet.Yes - I Was able to unscrew the handle. Inside was a spring and ball. Further disassembly is unclear. I did lube the internals, but I still get some slippage when tightening a fastener.