Did my first smoke the other day, made some mods, now today (in the rain) was going to do a sirloin tip. Only had a 2# roast (maybe that was the problem) but I switched to a mix of briquettes and lump. Used the minion method, the briquettes were all lit in the chimney, smoker never got over 275 and the roast was up to 130 (with two different thermometers) after 57 minutes. Used the bottom rack, had water in the pan. Open to your suggestions on what is going on? Can't handle the inconsistencies.