Have to agree wholeheartedly with Keith on the worth of oversized pins. None of my Contender frames have ever seen one, and never will.
But it that's what is installed on old coaches frame, a new pin from TC will probaly be very loose in his frame now, and in any barrels that have been driled for the oversized pin. He may be locked in to using the oversized pins now with that frame and those barrels.