Don't mind Snake, he posts his opinion as fact.
YES...i know you are on a rampage of proving me wrong but...
IT IS THE FACT !

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Did you ever buy one of this DC arcade stick yourself?
NO ! right?
There isnt enogh space to add...how i know?
Because I do

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i am serious...there isnt enough space to add 1 1/8 buttons...
Also,i dont recall people making fun of 1up's rotating panel..its just... people thought i was little too complicated for most of us thats all(i mean you know...).
But I still need to know the exact type of buttons the DC stick uses. Are they standard pushbuttons I can get from Happs? Someone help.
As for you,I dont think you can buy these buttons from happs..AND i also dont think they are the *original* buttons used on original sega naomi machines(like zombie revenge).
If you somehow(i dont know how) manage to drill one 1 1/8 hole on that stick(i dont think you can,i had one of these long time ago and as far as i remember) then the closest you can get is this
http://www.happcontrols.com/wp/item_search.html?item-no=58-9613-L button.

The comp convex button from happs.get the green one because thats the only look very similer to the one on your dc joystick(its almost same).
If you can't find the exact button you could replace all of them.
BLEEEEEP !...wrong

You cant use the nut from happs button on those existing holes on that DC stick.