Originally Posted by mblgjr

Left-handed drill bits work best for me.

Also, if it broke clean and you can pull the backplate off...

Try heating the block some, spray some penetrant (PB 'Blaster) or other light-oil down the hole and take a sharp pick and 'push' it counterclockwise.

EZ outs aren't a viable option.

And don't overtighten the backplate screws next time Hercules