This morning I was shaving with my New SC loaded with a Derby Extra. In the middle of the shave in the start of a new stroke, my razor stopped as if I hit a speed bump and the blade dug in. Hurt like the blazes and bleed pretty good. After that I couldn't get the bade to shave anymore. It just wanted to pull. So loaded in Shark Super Chrome and continued with out further incident. Anyone else have a blade quit on thec in the middle of a shave?