This is my smoker. It has a vent on the FB at the bottom and the smoke stake that I believe does not have a completely closed setting. At the lowest level it is still opened a little. I am making beef jerky tonight. I' have been making it for over 20 years. I have always used a dehydrator but now that I've found this site I've decided to try smoking some. From what I read in old threads I need to cmoke the jerky in the smoker at aboput 140F. I used this once so far to make a pork but and even with the leaks the temp was 225F - 275F. Now thats great for pork butt but not for jerky. So here is my question. How do I get the temp to 140F and keep it there? Do I use less coals? Do I keep the vent 25 open? is it a combination of both? I look forward to everyones comments as always.