Just got a Masterbuilt Pro Dual Fuel propane smoker. Trying my first 2-2-1 today with some baby backs. Had a little trouble with flare ups so far, so I'll probably try foiling the pan with the wood chunks next time. Using apple wood, a store bought rub, Jim Beam sprayed during foiling. I'll put some BBQ sauce on during the last hour. Planning on throwing on some sausage, too. How long should it take to heat up at 225? Thanks!