Unscrew knob, unscrew the round cover.
Yeah, that’s what I’m aiming to do too. Made a template with the original, now pulling over edge and cutting/folding the hidden side. The only issue I’m having is the complex shape at the corners of the aluminum. Do you remember any issues there?i did it with leather (normal thickness). i stretched it over the corners, pulling it over the edge, then cutting and folding on the hidden side. i primarily used adhesive, but i also used a few thin / short staples to tack it into place. i did this about 4 or so years ago ... but i know i used the original vinyl as a template.