I have a one year old PelPro PP130 which rattles very loudly when it is hot. I feel a vibration in the convection blower which vibrates the sheet metal the blower is mounted on. The rattling stops when I place my hand on either the blower motor or the sheet metal plate. I contacted PelPro explaining this situation and included a video illustrating this vibration and what makes it stop. Their reply was to ask me about the venting, to open the door when in operation, clean the unit, how often I clean it, and finally to clean the firebox and use different pellets. I clean the unit regularly including both blowers. I have asked for an explanation as to how these are related and only get more suggestions that the unit is dirty. They have offered a warranty replacement on the convection blower but insist this is what they are "told by techs that have been working with these stoves for up to 10 years." What am I missing here?