I'm preparing to egg for the first time. A 9lb. bone-in boston butt. To save time, I bought one of the egg set-up stones, so I won't be using fire bricks which I'm guessing sit down lower in the coals. I have a V shaped roasting rack and I prefer to use a little liquid in the drip pan to obtain max moisture. Does my drip pan need to sit on the set-up stone, under the rack to steam up good or on top of the rack with the v roaster in it. Also, does the added moisture help evan with the egg?