I can make my spine touch the wall, too. Definitely where the bolt holes are. I will say that I rarely touch or feel the bolts from my doubles, but occasionally they'll touch a little. The drysuit undies absorb most of that. To say that it can't isn't really accurate.
Body type might have a factor in this.
thanks, I was beginning to think that I was deformed by being able to touch my spine to the wall
