My back patio area is sloped to help with drainage and when I moved Puff into place, I was only concerned with the aesthetics of the patio and the smoke chamber was actually slightly lower than the firebox. It has been bothering me for a while now, so today I decided to pivot Puff 90 degrees so the stack is higher than the firebox and WOW, what a difference it is making so far! My temps are MUCH smoother and I am not using nearly as much fuel. We will see how things come out throughout the day, but so far, twisting it seems to be a BIG improvement!!