OK. Thanks for the info. I work by the Lowe's in Henrietta so I'll check and see if they have anything. I have a shop vac that also turns into a blower so maybe I can use that and rig an adapter up. I could probably take the cap off the top and run the vacuum through the entire pipe (attached picture). I'll make sure the stove door is open as well so it does not damage the vacuum switches. This sure beats unbolting the combustion fan and brushing everything out like I did yesterday.