Hi I had a shave last night with a 3 day growth and it was horrible, my beard is so tough that the razor doesn't just glide through the beard there is alot of resistance, the first pass was not as bad but second and third was really bad I had to stop shaving and couldn't get that close because as I was going against the grain it was just to painful and felt like the hair weren't cutting because it was so tough. IV heard of the expression like a hot knife through butter when shaving but for me it's like a cold knife through a brick.. any advice?