Replaced it with a Personna Platinum and made myself feel like an fool. I was getting ready to type an apology on B&D to Derby for all the bad things I said about it, about how it was a good blade and I would use it in my SuperSpeeds.
As soon as I used that Personna I realized that the Derby is not a great blade and all my bad mouthing was warranted.
Feather after 1, I just have a very uncomfortable shave in my mulhe rocca rR96, don"t know why when other blades work great in it, I think I will just quit using them