Both belt tensioner bolts broke on FEAD. I successfully removed one with an easy out. The second is harder to get out. I noticed on the one I got out that the threaded hole is a through hole. There is some space between the casting it secures to and the front of the motor. I would like to know if the other threaded boss is a through hole as well. I'm afraid of tapping hole too deep and damaging the engine. I appreciate the help!