One of the most questionable roots of this whole thing is the original "95th percentile" decision. Whether or not it was wholly political (can we remember who was in the White House then, and seems to be in the news every day now?), it was taken on the basis of very limited knowledge of what would be required.
And it's not exactly easy:
We've since found stability issues we didn't know were there, as well as adding bigger helmets to the equation.