Please advise how we can repair the steel door which is located between our foyer and garage. The "striker" (I believe that is what it is called) does not keep the door from opening. Needless to say, the door doesn't lock either. My main reason for asking this question is that our "puppy" 65 lb. ****en retriever, is continually pushing the door open and is getting into mischief in the garage. My idea is to remove the striker, put a thin piece of wood against the jam then screw the wood and striker into the jam. My husband's concern is that the screws won't hold once they are removed from the metal. We are able to do very simple household repairs and hope that this will be easy. Any suggestions? Thank you.