This is only for technicians to answer! I have bought a new lock button as well as volume control buttons. I've got problems attaching them. My first problem is that the new I've bought hasn't the little "button" on the back of each item. Hard to explain, but the original parts of let's say the lock button has a metal "button" on the back of it, making it possible for the flex cabel to come in contact with the lock button. This isn't on my lock button, and I've looked around and everyone tells me to pry of the "button" on the back of the original one and place it on the new I've bought. But how do I do this? How do I pry the button of?