In honor of Eggfest I am going cook my first ever Prime Rib. This is the roast that I purchased a few weeks ago that was pre-cooked. My plan of attack is to fire up Mr. Big and heat the roast at 400. My two questions are should I go at a higher temperature and what temp should the polder read for Medium Rare. I am guessing that it will take an hour to reheat.[p]Whadayatink?