Quote Originally Posted by Airsporter1st View Post
Just be aware that if you buy the expensive turnscrews, its not the end of the story; you still have to grind them to fit any given screw. The advantage being you can get an exact fit.

The set of screwdrivers Richard linked to are better - no grinding, but expensive.

The Pachmayr set is a better bet for diy use, though. It has a good number of hollow ground bits (plus others) so you can use the one with the best fit.
Expensive but two sets are nearly 10 years old, used daily and good as new.

Turn-screws are for cased sets not for serious use.