I've tried squaring up the gantry and cleaning and oiling the bearings and rods, and nothing will get rid of the horrible grinding/squeaking noise as the extruder moves along the Y axis. It got worse after taking it apart, cleaning it, oiling it, fixing the clicking problem by putting the PLA spacers in it and squaring it up again. I dont really understand how their method of squaring things up is really doing much. You loosen up the pulleys, put the braces on, make sure the pulleys are all the way against the side (which they were already), then you have to take off the braces to tighten the screws because the screws aren't in a position with the braces on to tighten them. I just don't get how that's squaring up anything. I am now dreading having to print anything on this printer anymore. I'm at the point where I'm about to cut my losses and go get another printer to replace it. I should have returned it to Amazon permanently when I had the chance. Listen to this wonderful noise: I cant use this at night anymore because this woke someone upstairs.