Exactly what makes me think the razor is dull is when shaving the thicker whiskars on my chin the edge will cut into the whiskars and then pull my skin. Sometimes a stroke goes smoother than other times. I have not found a good way to hold my skin still. I pull up at the top of my cheeks but don't know exactly where or how to pull the skin on my chin to make it tighter so it can't be pulled as easily. Maybe that info helps someone understand what's happening.

Jack