and quit cleaning after you cook. Clean before
> you cook......with fire.
>
> TFM®
>

That's just it. I didn't clean 'em. left all the grease, grim and gunk on
the racks.
After further investigating, I have figured out that rain can enter into the
flues if it is windy out. The parts that got rusty did not have any gunk on
them and were in the path of the rain.
I am going to try the electrolysis thing ( it sounds cool) and then see what
happens.