Anyone know of a "backyard" method to put the temper back in an EZ-Out?

They are such a useful tool and when you need em you need em. It would suck to need it next time and have a less than perfect tool. (That’s what she said) Replace it, and next time you need it you’ll be glad you did.
this is spoken like somebody that has worked in a shop with a shared tool box... and has opened the easy out case to find instead of the 5 pieces and 5 drill bits: one missing, one broken (the one you need), two the same, and one huge off brand one, with no matching drills in size or brand-- all of them duller than a butter knife...