[Dave at Pelican Parts]

Drilling a broken off easy-out is very difficult; you will need to purchase special drill bits for drilling hardened tool steel. Center-punch very carefully so the bit does not wander.

Another option would be to weld a nut to the broken bolt; if the bolt is broken below flush, then build up the bolt with weld (being careful not to weld to the side of the hole) and then welding a nut on. Then you can turn the nut out with a wrench, hopefully with the remains of the bolt.

Failing that, see if you can take the carrier to a machine shop. They have ways of dealing with broken bolts. If nothing else, the hole can be burned out by EDM (Electron Discharge Machining).

It may be simpler to replace the carrier, though.

--DD