Yes left side of cook box, have new cook box. I have slide rail screws.Which screws? If you're asking about the ones on the left side of the cook box that look like they are holding the burners "down" they should never be removed. But they're small self tapping #8 IIRC
Looking for the screw size that hold the burner tubes inside the cook box and the2 inch long, 1/4 inch 20 tpi hex head stainless.
Looking for the screw size that hold the burner tubes inside the cook box and the
screws that hold the slide rails on bottom of cook box.