Couldn't you make the hole bigger?

IIRC it's been mentioned that enlargeninig the hole might allow unwanted
noise (electric) to leak out. Don't know if that would be an issue if the knob is metal instead of plastic as the original. And I don't recall seeing many trouble reports from people using DarkStorms uncoated fascias (myself included, on the MkI)

And yes the front (but not the fascia) can go over the knob, so you can put the grub screw further back. [dopeslap] x 80
I'll make another grub screw hole in my prototype knob tomorrow and report back...

/Michael