Geeetech Prusa i3 improved y-axis motor mount

The y-axis motor mount Geeetech included in their acrylic kit is 2mm too long which lets the motor tilt slightly when the y-axis belt is tightened making the belt run off to the side. This is a copy of the original mount which fixes that problem and adds a fourth screwhole to secure the motor better.

The motor sits flat against the back acrylic bracket with this mount making it unable to tilt.