Anyone using Med Preps here? Two months or so ago I ordered them in bulk after testing them beforehand. When I was testing them they were great. Sharp and smooth and they became my fav blades. However, something makes me thing I might have received a bad batch of blades. It's hard to explain, but one side of the blades shaves as expected, the other one tugs and is not all that pleasant (a bit like using Derbys). I've tried them in 3 different razors (37c slant, R89, Super Adjustable) and I got the same results in all 3. Anyone else experienced this?