The Atom z-end for fixing extruder

The Atom extruder which is bowden type connect through the hole to the upper right corner of aluminum frame with bolt setting at a appropriate angle. It seems to have an angle of about 45 degrees usually.
On the opposite side of the hole, plastic parts of z-end is installed.
The z-end is designed having two holes to bolt the aluminum frame side, but in order to tighten the extruder, the z-end hole of the right side bolted from another side.
However, since the extruder is fixed only by o