I'm completely frustrated. If I bypass my brand new vacuum switch the stove runs fine. I have cleaned the whole stove. I have no blockage in exhaust. Outside air doesn't seem to be clogged. I have cleaned the pipe from the back of the fan to exhaust. I have cleaned the fines box. I have taken the orange thing out of the hopper, cleaned that and made sure the little hose to the pressure switch is ok. I have made sure my hopper gasket is tight and I replaced the rope gasket on the glass door. I have made sure my hopper gasket is unobstructed and tight.