Your iFixit screwdriver has seen better days. Its been in one to many tight places and its mated with far too many screw faces. Its been a part of so many fixes that it seriously would appreciate some down time.
But no, you want to keep using this driver. You want it to weather the next fix. It's just not performing like it used to in its glory days.
So what is this anyway? A guide to fix a screwdriver? You bet.