I have a Snell-certified Shoei full-face helmet. Being a Snell helmet I am sure it is heavier than other, less-substantial helmets. I was talking to a friend of mine, yesterday, whose wife is a chiropractor and who seems to know a little about the neck and spine. He said that the weight of the helmet along with one's head can cause dislocations in the vertebrae, pinching nerves, exciting muscles to spasm, etc. Once it starts it is self-perpetuating and needs intervention to stop-like getting off the bike and resting. Or a visit to a chiropractor. I did order some Suburban Machine bar risers. I noticed after reading the MYRP treatise that my arms were sloping downward to the grips and I know the new Russel saddle sits a bit higher than the stock saddle. My preferred posture is close to the MYRP except for the interaction of my leg muscles. That will take some work to adopt. The risers will help, but I doubt if they are the complete answer to my pain issue. I was 11 days on the road before it really became a serious problem.