I know I have beaten this to death, but is everyone in agreement that their combustion blower is somewhat quiet and their distribution blower is the one that makes the noise? I know it's the combustion blower that I'm talking about because it's the noise I'm referring to when the stove first starts up and shuts down. I had a tech out to look at ithe stove for a whistle noise which they fixed ( intake has a small leak which they sealed with silicone) , and he said the noise was normal. Is it worthto buy a replacement Comb blower, anyone know how much they cost? thanks for any info!