I’ve been wearing ProTec for years. When I started in Naval Special Warfare all we could find are XL. I still believe that’s the largest size for the classic full cut. If it’s tight on your forehead and bump in the back press on the sides of the helmet and if that feels better than it’s an easy fix. Zip tie both ear flaps together then place it in the oven at the lowest temp. After it starts to soften put it directly in the freezer. Check the fit. If it needs more time then just keep repeating until it’s good to go. Shaving down will make it feel weird and you ruin the felt.