I'm going to make the button round like the older style (don't care for the polygognal shape, kind of sharp edges but I do like it being stainless where your finger is always activating it) Then I'm going to put the brass lock ring from my #6 on it (the one with vertical lines vs being knurled) I have future plans for the control ring too
I took just the atty connector and put an old atty into it, chucked it in a drill and used sandpaper. started with 120 grit, then 320, then 600 and a final wet sand with 1000. Finished by polishing with flitz metal polish.