I was very excited to get one of the HH chain charms but can't seem to get it to clip properly to my havana. The fastener can get around the metal ring, but is too small to close. Is this typical or is there some trick to getting it on? Elbow grease? Heating up the charm and hoping the metal will expand sufficiently? The only other way I can figure out how to do it is to wrap it around and clip it to itself.