* Delete 1 Part 8 Light Gray Plate, Modified 2 x 2 with Wheel Holder Bottom
* Delete 1 Part 3464 Trans-Clear Wheel Center Small with Stub Axles (Pulley Wheel)
* Add 1 Part 2415c01 Light Gray Plate, Modified 2 x 2 Thin with Plane Single Wheel Holder and Trans-Clear Wheel with Black Tire (2415 / 3464 / 3139)
* Change {5 to 4} Part Black 3139 Tire 14mm D. x 4mm Smooth Small Single