Original burner grates had deteriorated and two side burner grates and the center grates were replaced.
The burner grates for the KitchenAid range are no longer available from KitchenAid. Other burner grates available in PartSelect were a like-kind fit. Installation was easy--just replace the burner grates.
Burner knob appeared to have been accidentally melted by placing a hot pot on top of it.
I took the melted knob off, located the part # went online and found this site. I immediately found the correct burner knob, ordered it, and it came very quickly to my home! I just popped it right on the cooktop, and it's as good as new.
change over from Natural Gas to LP and install cooktop from Electric to gas
removed old electric cooktop and install gas line and gas cooktop and change from natural gas to LP remove and replace orifice with new ones from kit, my cooktop called for 2 black orifices in the two small burners but did not come in the parts kit that I orded so I used 2 red orifices and it seems to work just fine.