So I snapped the head of the bolt on the left side of the oil filter housing. .I figured it would be easy to extract it using an easy out. But when I went to drill a hole it was very hard to drill..I didnt want to push hard and have the bit go shooting through so I was wondering do I continue drilling or is there another way to get it out? Also is this bolt hardened or something making it very hard to drill? Thanks so much for the help!!