Replying to Possible New Line Binding Problems

So here is the deal. I work at a shop and was settin up some skeeze with the binding. The adjustment for the din setting that is right in the center of the plate seems to not be working properly on a few of the bindings we have. The problem is that when the screw bottoms out it is not at the lowest din setting, thus hinting that it could be up to two din settings inaccurate. Mind that we have not talked to Line about the problem yet, and it may not be an issue, but I was wondering if anyone else has noticed similar problem? Also any feedback on how well the binding skis would be appreciated.