Was disgusted the original blades appeared to not even last a year, so ordered new ones, which are awesome. HOWEVER, as I discovered when I went to pull the old ones out, they were not worn out, as I thought they were. Apparently longer hairs (from my sideburns, I'm guessing) had gotten wrapped around the blade shafts, thus limiting the spinning of the heads. DOOOOH! So, next time you think your blades are not spinning like they should, take them apart and pull..