I need a very mild shave and after experimenting with various DE razors (even a Gilllette Tech is a bit too harsh for me) I have accepted that nothing can match the Wilkinson Sword Classic, that mass produced bit of black plastic. The problem is that I often find sharp plastic corners rubbing against my face; when I run my finger against the edge of the razor they are easy to feel. If I buy about three razors and mix and match the two components of the razor, I can usuallly find a combination that works smoothly and that lasts 6-12 months until the screw thread gives way and I have to start again. If this a problem others have found, and is there any way round it?