Have you looked at CLA Grills for replacement parts?
We have a large inventory of Broil King replacement grill parts, including burners, Flame Tamers, and cooking grids. Order $49 or more and get free USA shipping to the lower 48*
www.clagrills.com
I have a 27YO Falcon MK V gasser that they still supply parts for. It's far cheaper than buying a new grill. I have no interest in the company. I'm only a satisfied customer from original purchase to replacement parts.
BTW, Broil King is one of the few brands of gassers I'd look at buying these days.