For IE 1.16.4-4.1.2-129, the crusher doesn't accept hoppered input into the top layers. Instead, it takes hoppered input into the middle layers. The line of code that sets the input layer to y==1 should probably be y==2 if the intent is allowing hoppered input into the top layer. As it is, using the middle layer, the business end of the hopper points at the open space just below the crushers bin.