Good evening all, I may have a simple question but I'm unsure of myself. I am buying a Brinkmann Trailmaster Vertical Smoker, I'm going to cure it and the owners manual says maintain 250 for two hours and then increase to 400 for 2 more hours. I understand that the damper is to regulate tempature but how do I do this. I've had an offset before and did ok with it, biggest issue was it got too hot and took too long to cool back down to desired temp. I've also had where I couldn't even get the temp in the right ball field, wanted to smoke a turkey at 250 and ended up smoking it at 350. So if anyone is willing to break this down barny style that would be awesome. Thanks in advance.