Recently purchased an originial Exactor pistol NIB- took it to the range and it would not fire half the rounds when fed one at a time. With a mag in, it would stove-pipe the next live round, if it did happen to fire a round at all. Any help, suggestions, or information will be greatly appreciated. I know this is no Mark 2 or Browning, but it is a light(20 oz) and neat pistol that I hope to get working properly. Gunhound