I'm supposed to have the new, improved never-to-rust Pils and it had a nice sized spot on the blade floor after my second blade. I have been using Feather Yellows (original) and leave the blades in 5 to 7 days depending on how it feels. I got most of it off but there looks like a very tiny spot has transfered itself onto the stainless "floor". Not sure who to point a finger at but it seems the blade might remain damp and generate the rust. I am not fanatical enough to remove a blade after every shave....if I did that I might as well use electric. Will keep a beady eye on it.