I'm having troubles with simply cooking a steak. I usually buy Sam's Club rib eyes that look well marbled, maybe I need to up it to "choice" or "prime" I usually take them out an hour ahead of time, salt well with kosher and fresh cracked pepper. I've grilled with oak lump, charcoal briquettes using a chimney starter, I've tried making on cast iron, all with mediocre results. Any ideas? thanks.