Hello, I'm a noob and I have a noob question. Basically I've been getting my gear slowly, while I have the money, before I go for my Ls in a few weeks. Today I picked up a Shoei TZ-R, it's a size medium and it fits me nicely etc. When I got home the first thing I did was put it on and step in front of a mirror... I thought I was looking at some cross between an alien bug and an astronaut. I am around 165cm tall, averageish build and the thing just looks a little big on me. Is it true that there is very little size difference between most helmet shell sizes, if at all. Is it true that, basically, when I picked up this medium the only difference between it and the other sizes was the padding. Why do helmet manufacturers do this? Is it simply cheaper? I am also wondering if a helmet that seems too big (physically, I mean) will be a problem at all? Anyone else have any similar issues? Thanks.