I received my broil king baron bbq as a wedding gift 2 years ago. It is has been a fantastic bbq up until this summer. The grills have completely rusted out to the point of unsafe cooking. We keep the bbq clean and covered, I've never seen a cast iron grill rust out like this. I came here to find a replacement grill for this and it appears to be such a common issue. What should I do, i dont want to buy this same grill.