The back door of our house has what I believe are called "self-closing" hinges and until recently it would close on its own when not held open. Each of the two self-closing hinges (the top and bottom ones) has a hole on its side and each hole had a pin (really just a nail) in it. Not long ago, though, the nail / pin in one of them snapped off and the door stopped closing on its own. I took the nail out of the other one to see if there was anything "special" about it but as best I can tell it really was just an ordinary nail. Unfortunately, I'm now not able to replace the nails / pins in either hinge's hole; whenever I try something prevents me from inserting a new nail. If that were happening with just the one that snapped off I'd assume that it's the broken piece of nail still in there that prevented me from inserting a new one, but I also can't re-insert a nail in the other hinge from which I removed the fully intact nail. So my question is this: does anyone know what I need to do to be able to get nails into the holes so that the door will close on its own again? P.S. I don't know if this is relevant or not but the door is apparently also not very well balanced because not only doesn't it close on its own now but it actually swings to fully open when not closed.