That's probably as good as you are goint to get then if you couldn't fit into a medium. Did you try other helmet brands to make sure that you actually have a "Shoei" head? I for example find Shoei helmets to be very comfortable and HJC AC series helmets fit very well. On the other hand Arai, HJC CL and CS helmets, and many others don't fit me very well, they seem to round. You want to match the shape of your head and the size of your head.