Low score not because of tool performance but because of a crappy warranty I had a problem with mine, basically the threads on the blower screw had rolled. I called ken tool and then told them I bought it through Amazon. They basically told me there was nothing they could do because they didn't know who was selling them on Amazon. I managed to fix the themes and now the tool is working again. and a word of wisdom, i would recommend using axle lube instead of penetrating oil on the fan screw.