i just swapped phones cause my screen had the greylines on it, I went in to apple, they gave me a new phone, I took my protector off, and put it on the new phone didnt care how, as I was going to fix it when i got to the office.
( i did notice when I took it off, that the home button and speaker part collect dust around the cut outs like crazy)
I had to take it off 3-4 times to get it to perfectly line up on the new phone, I have one piece of lint on the side of the screen, but the ice max fit just as well as it did on my first.
i saw a few sides had bubbles more then the other side, so id take it off, and realign it a little more towards the side that had bubbles to equal it out some, and its worked.