About this 3D model

This is direct extruder for Prusa i3, with 3 point connection to carriage instead of standart 2. It is designed to be used with E3D v6. This is my first try in extruder development. I would be glade to get some suggestions about the design. =) V1.0 - Initial V1.1 - improoved engine position and some redesign (should fit better)