The same can be found at Walmart and ordered on line.
I clean a lot of GE/Hotpoint ranges from the 1960s through this century and there's some real problems with bad contact/loose wires in these after a few decades. You might want to unplug the stove and check the plug in receptacles or the screw on porcelain burner covers.
The trim rings can't go in the self cleaning oven, the porcelain drip bowls can.