If it ain't broke...
...don't start now!
FWIW, the BMR Grilles are similarly designed... smaller, simpler, but with some milling to fit the ScanSpeak Driver as that goes edge to edge on the Baffle. Admittedly, I might only have put them on once for 5 minutes after I had them set up. I don't think I ever unwrapped the 2 front Grilles for the 3s, only the back Grilles for the Upper Cabinet.
*blushes
*...unappologetically