Ridge pro tip for those struggling to get the power strap tight and then mushy flex.
Tighten the ankle buckle to desired and close. With the Velcro open half close the walk mechanism. Pull the power strap sorta tight and Velcro. Close the walk mechanism.
You can figure out you own combo of walk buckle position and power strap pull to get the closure you want.
Drastically improves the boot for me.