blade kit (marble kit 2.0)

It is necessary to have at least the "marble kit 2.0". All kits are in this collection:
https://www.thingiverse.com/sergiode21/collections/marble-kit-20

It is a new piece in the shape of a ramp with interchangeable blades of one, two and four blades. The cross of four has to join two pieces that come in the same file. I also want to emphasize that the 4-blade can be in a position that does not allow the marble to continue.

Thanks