Helicopter Plus(Twisty Puzzle)

So this is the equivalent of the curvycopter plus but on an helicopter,it doesnt add any external pieces but internal instead,i havent printed this but i did print a helicopter chop(which is simply an helicopter cutted on half) using the same design and it turns pretty well so im pretty sure this will be as good at that one.
You will need 12 M3-screws and 12 springs in order to assembly it and the pieces i uploaded have the name format PieceType xQuantity.stl so it is pretty intuitive.
If you