If you happen to be along this route and see me, say hi. I could also use a witness, though I am leaving at 04:00.
I second this recommendation. My wife was having similar issues. I used a spoon to remold the Styrofoam (pressing on it in just the right places) and it completely solved her helmet comfort problems.As far as your helmet goes try hitting the tight spot with a ball peen hammer. It's just Styrofoam under the lining.
For me, it is two pressure points juxtaposed to each other. The peak of my Occipital bone at the base of my skull seems to be dense enough for horns, and the peak of my frontal bone is well-formed for echolocation. Between these two I get a continuous push.
Another member here pointed out to me that the wind may play a factor. He rightly stated that a screen lowered to allow air flow may be enough to push on the offending sonar dome.
And to be truthful it could be me. When I got off the bike I had a noticeable headache but otherwise felt great. I wonder if my headache is a condition of muscle memory of sorts; I've been dealing with this my whole riding life. I do need a modular to be sure, but the Nexx leave no imprints as my older helmets always do.
I am getting right back on in a couple of days and this time think through the factors which cause my headaches. What happens I think is that my resolve becomes softened because of my triggers; the helmet remains the last one. I have corrected all the others.
As is my (good engineering) habit, I also play both sides of the argument in my head. Why does one want to ride a thousand miles in a day or eleven thousand in eleven days? Why do I want to ride so much?
On a ride, I make decisions at a frantic pace, more so when I am feeling spirited. I suffer from a mind always too busy to calm down and, for some reason, going fast and leaning in is very calming to me. The more technical the ride, the more I feel refreshed - within reason as the weather does affect me too.
I judge the "goodness" of my ride base on its technical merit; "Put-puts" down meandering roads or saddle time on an interstate have little value to me - except to get me to the real roads. My beloved and I differ significantly on purpose as I find more value in the next carve then I do in the next highly-rated restaurant or store.
I just want to ride all the time. I want to master the technical merits of this sport more than I want to do my own work. I may have a motorcycle problem.