Hi, I'm new to the forum and have lurking here off and on for a year. The generous tips have solved a few questions but I have something new to me. My convection blower fan has a high pitched noise to it this year. I have an Enviro EF3 pelllet stove and is just a year old last week. Worked well but now the high pitch waving in and out is really annoying, especially when try to sleep. Such as why I am sitting here at 3:50 am typing in a sos plea. Has any one ever had this problem? Another thing.. does anyone know where the two oil holes are on the convection blower? Thanks, any suggestions would be appreciated.