Big Gunns can guarantee one way to get a hold of him. Find out who his "people" are. Once you find them let it be known that you have a ton of money to spend and are going to spend it asap. Be expecting a call within the hour.
BG's only half kidding. Ian's a busy man. He needs to make sure all his time counts. Good luck trying to reach him. He doesn't even take all BG's calls. The nerve huh?