Grill Grate support on Broil King Signet 320?

[bbqLuv]

I have always used grill grates on top of cooker grates and store them when not in use. But that is me.

[CbusRog]

Four-year-old question, but what the heck, someone else may stumble in.
I used a length of 1/16”x1/2”x3/4” aluminum angle as a shelf on top of the rear nubs. Had to make some relief cuts for the casting webs at the nubs. Works great.

[cstefan]

Like many grill grate owners I like to use my grill grates flat side up most of the time.

Unfortunately the Broil King Signet doesn't have a continuous lip front and back to support the grill grates. I've damaged the rail side of the grill grates a bit from using them unsupported.

Since I've discovered the problem I've taken to placing the Grill Grates on top of the factory grates. Due to the factory grates being uncoated cast iron they tend to rust (I've seasoned them but the temperatures I sear at tend to burn most of the seasoning off). It isn't a huge deal as I'm not cooking directly on the factory grates. However I'm not a fan of nasty rusted cast iron grates.

My options seem to be either getting extra grill grate panels to use flat side up or getting aftermarket stainless grates. Any other thoughts?