Head rest height adjustment (1 Viewer)

[Bungle]

Before I get medieval on this and break out a drill, does anyone know an easy way to secure the drivers headrest with a missing clip?

I've had a search and can only find how to remove the unit when the seat is stripped, and that seems like taking a sledge hammer to crack a nut.

 

[Bungle]

Broke out the cable ties, is there nothing they cannot bodge together?