Before I started burning this season, I put a Tstat on my stove.I was going through alot of pellets. So I turned the Tstat off. Now my stove does not seem to be burning right.I don't have a consistent flame. I have it set on 7 and the flame keeps going up then completely out. Do I need to unhook the Tstat from the stove as well. I tried to adjust the bottom buttons but that does not seem to make any difference.