Remixed the pulley since it is a bit too fragile for PLA with a strong belt tension. I made the wings where the wheel is attached to thicker. It now is a bid harder to put into the body, but does fit and doesn't restrict movement. You might need a little longer screw, but I could barely fit it with the same screw as with the original one.
Also I printed it with 0.1 layer height since it should increase layer adhesion.
For supports you only need "Touching Buildplate" (Cura)