i used to work at a colorado ski and golf and can speak for them for the most part, first off it wasnt an error, if it was early/mid summer w/ a few more months to the ski season they usually dont tighten the binding to your recommended spot because its worthless to put the spring's through pressure for a few months prior to the ski season, chances are you probably were'nt listening when they were telling you why they did it. Last year i would go through any tune, fix, or mount with a customer they were often off in another world not listening to why we did what we did, and were trying to act like they were some bad ass skier, and were to dense to listen to us, and often thought they knew more than the employees(most w/ prior work as reps, or at other shops in the ski industry)(colorado springs store). And in the nicest way possible that was probably the case, because you were'nt smart enough yourself to check your bindings before you went out, let alone after they mounted it, which i know i do sub conciously to always crank mine up. I'm not completely saying thats the case, because there are idiots at every ski shop, but i'm just speaking from my experience of working there.