Thanks guys. I think you have it nailed byc and dux. I've done this on gas and electric for so long I never took into account the temp spike when the lid was open. One thing is for sure, I learned a helluva lot on this first time thanks to both of your help.
BTW, I T-Rexed two ribeyes on the 4th with excellent results, and the wife told me if I can do that every time she never wants another restaurant steak. We chased it down with some gulf shrimp on skewers. As I've said, I'm hooked.
Mike