I just lit off my new Harman Advance pellet stove for the first time this weekend. It appears to work great but I have an intermittent vibration when the feed motor runs. I am running the stove in room temp mode with the feed set on 4 and the temp setting around 70. The stove keeps up and the temp has been steady however, every few cycles of the feed motor there seems to be a vibration coming from the stove. At first I thought it was the panel on the right side but everything seems to be tight. Has anyone else had this problem or can tell me what this intermittent vibration could be? I may have to break down and call a Harmon dealer but from hearing about all the customer problem woes thought I would start on the internet. Thanks...Rick