Been working with a new pair of Salomon X-100 boots and after multiple attempts with various shell stretching to get them wide enough for my feet and some Intuition HD Race liners, we're discovered that it's not my forefoot or instep that is cutting off the circulation like originally assumed. With the bottom buckles undone completely, I tightened up the 2nd buckle from the top and lightly snugged the top buckle as a test. In 20 minutes, I had lost feeling in my big toe and the one next to it. The boots are very comfortable until I start to lose feeling.
I have custom orthotics and we've molded the Intuition liners (the stock liners hurt my instep). How the heck do you modify a shell or liner when the one buckle that needs to be tight is the one buckle that cutting circulation? I hesitate to allow any cutting of my liners to get around large veins near my ankles in case that's not the problem.