<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by Wesley S:
[qb] Well I'm almost 5 hours into my cook and so far it's not too bad. I'm adjusting vents about every 30 minutes. I did stay at 250 for about an hour and a half but has been either high or low ever since. My father came by to check it out and while talking to him it shot up to about 350. Took me about 30 min to get it back down. Then a friend called and I was helping him with some stuff over the phone then afterwards I checked and it was down to 140 (only about 20-30 min). I opened all the vents and waited till it got back to about 270 and closed the bottom vent to about 25% and top to 25%.[/qb] <HR></BLOCKQUOTE>Small moves, small moves. If you're making adjustments that often and with such wide swings, you're over-doing it. First, don't sweat being 10-15 degrees off your target temperature. Second, unless something has gotten way out of hand, only open or close your vents in small increments-- 20-25% at a time-- allowing 20-30 minutes to observe the desired effect. On a long cook, like a butt, cooking 10 or 15 degress either side of your target temp for a fraction of the total time will not mess up the final result.