So I have 3 grills, the 2 red ones I just picked up today. The black one I've had for a while. Problem is none of them have serial #s. I've looked everywhere. The black one I'm guessing is a silver B? The drip pan is smaller than the others and has 5 bars. One of the red ones is complete but needs everything. The other red one had a bad cart so it will probably be used for parts. Any help would be great so I can get the correct parts. thanks!!