My Weber NG Platinum II has a firebox that has spread, this model is from the late 90's. The grill grates will drop on the flavorizer bars, if they are not perfectly centered. The frame is rust free, flavorizer bars go in both directions and it came with a smoker box built in. Wondering what my options are, Weber said the firebox is no longer available. Any ideas to repair the box? I am attaching an image of the grill from the web.
http://www.bbqsource-forums.com/invboard/uploads/post-11070-0-46152700-1307155126.jpg
http://www.bbqsource-forums.com/invboard/uploads/post-11070-0-46152700-1307155126.jpg