Inspect your work and test fit your drill bit driver. If some of the metal burrs get in the way of a good fit, just file them away with a metal file a...
This instructable is a quick modification for drill drivers done at Techshop that will help the drill bit driver to seat into a screw head better so you can avoid stripping out the heads of your screws. The taper (point) on a driver bit sometimes gets in the way of it seating snugly into the flat bottomed screw head. As always start with the correctly sized driver for screw you are using.
Disc Sander (Techshop!)