s2000_driver
·Invest the time and effort to shape the screwdrivers (I think you need two, one on each side) so they fit the slot exactly: very slightly narrower than the slot so they don't scrape the screw hole sidewalls, and just the right angle so the tip almost but not quite bottoms out in the slot.
It is very good advice to shape the screwdriver. Most Bergeon blades are too sharp out of the box. Grinding it down by running them along a fine sand paper helps a lot. BTW, none of the speedmaster bracelets need two screwdrivers. There are two separate tiny screws on each side. A floating pin between those two screws that attaches the links to one another.