I hope this topic hasn't already been covered in an earlier post, but for lack of this knowledge, here goes. I recently had the misfortune to have had the thin wide nut holding the input jack in place on the TOP/FRONT get progressively looser until the last time I removed the cord, whereupon the jack fell bacvk into the body of the guitar. At first glance, it looks like there is no way to retrieve the jack, let alone put it back up into place from behind! Are there specialized tools for grabbing the jack and for putting it back into place FROM BEHIND?!? I can't imagine someone building an instrument where this could happen and render the guitar useless. Any idea?