I need advice on the against grain issue. I bought a Thiers Issard starting kit from Adam at The Invisible Edge and have shaved with a straight razor now for about a month but I'm having hard time with everything under my jawline. My beard grows horizontally from center towards the edges of my face and I just don't seem to get the razor against the grain. I now have to shave it upwards and then downwards but this results me not getting close shave under jawline, what to try next?