Thanks, I'll try that. Now, does the top of the shaft protrude through the hole a bit? I'm asking because the end of the magnet I have is just a bit too large to go down through the hole. Well, I guess it must protrude if I can get a 1/4" socket on the end of it -- stupid question. Any advice/tips on how to avoid dropping the new shaft down the hole? Like maybe oiling the top end so the socket can't grab it?