I just upgraded my Lulzbot mini to the modular print bed system. However, I am having trouble tightening the washers. The instructions say to tighten them until they are level but not to over tighten. I am to the point where I feel like I might strip them but they are all still a little crooked. They are being pushed up on one side by the protruding glass bed. Is this normal? Would it be fine if they were all just a little crooked but equally crooked?