Thank you...The worker bees are all female BTW...LOL

If it is not broken off flush with the case iwould wet it good with PB Blaster let it sit for a while and either grab the stud with a small pipe wrench or vice grips, dont try to gorilla it out when it starts to move go back and forth gently a little at aa time and it will eventually come out. If it is broken off flush with the case you have to drill a hole and use an ease out but again gently you dont want that to brake off then you really have problems.I dont like ease outs much but sometimes necessary. Another way i sometimes get them out is drill a small hole close to the edge so you can get a punch in there and then hit the punch with a hammer towards the counterclockwise rotation also keeping it wet with PB Blaster.