The belt is new as of two months ago.Its a Gates belt. The pulley is stock and I have not replaced the pulley.I did change the oil in the blower as soon as this noise began and yes there was oil in it.Smells horrible, new or old.Dont get any on you,it stays with you all day. If rebuilding the snout is possible myself does anyone have a source for the parts?I do have a press and a fair amount of ability But my alldata just covers blower replacement not rebuild.