AAAAHHHH another custom button problem

[Luke]

ok b4 in my old topic i sed that i had problems with the buttons like getting stuck and all well this time its just one button thats gone wack ok all my buttons work accept for the [] so what i did i got my dremel but it on low speed and made the hole wider and it worked but now it has stop working i was playing dj max and the [] button got stuck what should i do?