So, had an allen tool head break off in one of my module screws tonight ... anyone have any tricks they might use to get it out? I've tried to drill the head to thread a screw into and hope to pull it out that way, no luck - can't get a bite with the drill bit to do that.

What I'm thinking I might have to do is go from the back side and do the same, hoping I can get a hole started in the screw itself and thread a screw there and hope to be able to back it out of the module ...

Thoughts/Advice?