Take the assembly in to a shop, use screwdriver, put it back in packet and go home

If I had £1 for every time someone did this where I work I'd be rich enough not to work there.

Also good luck with the black and decker boxes. I have a set and don't like them much. They are a fair ways different to "normal" drills. Keep the reverse thread screws safe as they are not m5, they are reverse 10-32 I think.