to adjust the spring tight or loosen the screw on the back of the RRS lever (5mm allen key?)
setting them up. This was a failed, and goofy system. it is made for the rear cuff to click into walk mode, when a lot of rearward force is applied to help save your knees, and allow for a larger range of motion in teh boot.
problem is that it can't tell when you are starting to fall, and still want to recover, vs falling and want it to open. So as you are fighting the fall, or just a hard turn, landing, etc the boot might pop open into this walk mode and then MAKE you fall.
reason it was benched after 2 years....
nothing unique about the shape of the boot, mid volume 101ish mm lange.
FYI: please check the shell fit of the boots too. most people get them too big, and then the foot bangs around, causing more pressure points, pain, rubbing, etc.