When you put a square along side the fuse it must be 90 degrees. I found mine to be just slightly off. So when I said squeeze I just mean truing the side when the top block is glued on. That way the sides are parallel and even. I am going to take a 5 day break from the 20th to the 25th because I have to leave town. When I get back I will finish the plane. Today I will ultra cote some parts.