Hey i was replacing my coolant fluid and went to pull out the coolant plug on the bottom of the radiator and noticed that the top half that help you get a grip on turning the plug chipped off. I tried getting all kind of pliers in and around it and also drove a flathead screw driver right into the center to try and screw it out, all failed. Is there any other method that i can use that will not hurt my radiator. Thanks !