You need to buy some Personna Comfort Coated USA blades (new name now)... I've had three confirmed duds....Confirmed how? I switched out each blade immediately and replaced it with another one... and the second one was perfect... that first one was unusable. Then you will no longer be searching in the wild... You'll have your own duds right there in your bathroom.Ah, the proverbial bad blade. I've heard tell of such creatures, but I've never experienced them in the wild.
I have had one, but just one, dud Nacet... again confirmed by switching out to another Nacet immediately.