Nice write up Zom. I'm assuming you're doing torque tests to get this info. I haven't done that since I worked at the Stowe shop where we were required to torque every single binder that went out the door...new or old. The Look failed consistently not releasing withing the allotted range...always over. That never sat well with me for the average skier. Most "skiers" set their din to what they need, not some chart, so it's fine for those folks.
And riding an 18Din set at 8 makes no sense unless you got the binder for free. Why lug that extra weight around?