I have a woodgun E-180 and have been trying to resolve the chugging puffing problem for a while now. AHS says to close the intake damper a bit but I feel like this will reduce my overall BTU output, is this the case? Anyway lately I have just been letting it chug as long as it wants, my intake is ducted from outside so no smoke leaks into my house when it is chugging. Will letting this continue cause any harm to the boiler or are these repeated explosions insignificant to the structural integrity of the boiler.