I've put about 30 days on my Solomon Xmax 120 boots this year, and they're great. Recently there has been a ton of powder where I live, and I'm wondering about softening them up a bit (shins getting pretty banged around in the soft snow). There are two screws on the back, and I've heard that I should take out the top one for 5% less stiffness, and the bottom for 10%. Is that correct? Also, if I wanted the 10% less, I take out he bottom, but put the top back in, is that correct? Dumb questions, I know. Thanks.