I have been using the Power Support Crystal Film for my new 3G iPhone and I like it but I wanted to remove and reapply it because the alignment was slightly off. But now that I have used the pre-install film, how do I remove the tiny dust particles / lint when I want to put on the second film? I tried reapplying without that step and it looks terrible - there are tons of little dust particles trapped in between. Why does Power Support include two films but only one pre-install film? Should I just use Scotch tape or what else to get my screen super clean for installing the film?