Last summer I picked up a few Genesis Silver B's in my area. They were free for different reasons. I broke them all down and rebuilt one out of all the good part. The only new part I used were the flavorizer bars and an ignitor. I have not use it much since I built it. I don't do a lot on gas and really am only learning the grill. This thing runs hot! In 5 minutes it will peg the thermometer @650-700 degrees F. Today I replaced the regulator and it still runs hot! Burners have a little more yellow than I think they should, but I don't think that would cause this kind of overheating. Any thoughts from the gasser crowd? Thank for your help!