Instruct: Classify the given Amazon review as either positive or negative.
Query: shaved heads not quite the same

I am not sure what is going on, but this is the third time I have bought replacement blades and this time they don't quite fit my razor. They cut and shave OK, but they bind on the razer as I cut. It is like they don't fit my razor exactly. When I shave the razors stop as they bind with the inner workings of the shaver. I am wondering if Norelco out-sourced the blades to someone else as the new blades do not fit my razor well as they did in the past.