PSP Bracket Owners: How large are you drilling the hole for the PSP analog stick?

Any recommendations on a screw to buy for the PSP analog stick? I got my bracket in today, and it is just beautiful

I have a question about the six button bracket... why do the last two buttons not have the ears as do the "original 4?" If by "ears" you are referring the tabs on the buttons, they are there, just hard to see in the photo in the first post. Guess I just don't see it in the sample picture for the 6 ...

Wow, this looks wonderful. I think the large rear buttons will keep things fancy.

I have a question about the six button bracket... why do the last two buttons not have the ears as do the "original 4?"