Last I added a cable drag chain setup that has bearing inside the 3d printer parts to allow full movement of the mill head but keep the cable and hose all above the mill head.
That drag chain looks like an awesome mod. I was wondering if you could post a view from a side angle of how the drag chain is attaching to the top cross-beam you added?
Also, would you be willing to share the model for the 3D print that attaches the drag chain to the spindle cover?