You and others have mentioned that. So at first I assembled the hinges with no abrasive washers. Still used the brass washers that came with the hinges of course. But I could not successfully adjust the doors. Either the hinge was bolted down tight enough to not move at all, or it slid around uncontrollably. I couldn't find a middle ground. Maybe it has to do with the slickness of the clear coat I used. Would it have worked if bearing against the metal of the door bobbins? I even roughed up the brass washers with 36 grit sand paper. It didn't work until I used the abrasive washers, and then it did. That's only my experience. Obviously it can work without the abrasive washers too.