Out of the box, the tensions were very tight, and was slow. After loosening tensions, it was a bit sluggish on the inside, but on the outside was fast. There was a bit a spring noise, which I fixed, by putting traxxas 30k in the springs. After weight 2, The cube is fast and a bit crunchy, and there are no catches. The extras in the box were nice. I intend on putting 4x1.5 N38 magnets in the slots, and think it will make the cube better.