Longer rackmount fins for 1072 and 317

I need to mount mikrotik devices deeper in the rack as currently cables are too close to the door and it’s difficult to close without bending the cables.
Where can I find a rackmount kit that allows for deeper mounting?
I know I can just use two screws in the original brackets and have them further in but that may not be so stable.

Something like this http://www.fullcompass.com/common/products/original/138215.jpg but maybe even longer and compatible with the screw holes.
Also found these https://www.promixsweden.se/pub_images/original/30100935_a.jpg which is almost exactly what I need but the slits are too far apart for mikrotik devices.

I ended up manufacturing custom fins, works for both CCR1072 and others.

Looks very good and solid…