Audioengine A5 volume Knob replacement

The volume knob of my Audioengine became very sticky with years. I found the model of kcassidy wich fit perfectly, but I wanted it a bit closer to the speaker, so I just add a flange on the side of the knob.
The space between the speaker is about 1mm.

I print it in ABS (because I had this nice red color), and face down for a. better texture.