hi there. today I did a thorough cleaning. I took out the blower and cleaned it thoroughly. it was only 2 bolts to take out. after I installed it and turned it on there is a loud chattering sound. I disconnected the blower and examined it and everything looked fine. I ran the stove with the blower not attached and it was not making any unusual sound. however as soon as I lined up the 2 bolts it immediately began making the sound again. I don't think it is coming from the blower, but the blower is causing it, if that makes any sense..any suggestions??