Hello. I have an Edwin Jagger 89 DE. Today when I put the blade in it and tried to secure it by rotating the handle, it rotated all the way, without staying in place. I can even pull the handle out. The middle screw from the cap looks in bad shape, so I think that's the problem. I don't know for sure though. I have been using Cif Bathroom Ultrafast for a month about twice a week on the razor. Maybe that's what caused the problem.