I bought a naked case to try out at Best Buy the other day. It looks just like many other similar naked cases I have seen but is made by Rocketfish. It is a really nice case and I want to try it out but I can't install my iPhone in it without dust getting trapped between the screen of the phone and the touch through membrane of the case. I wiped the phone and the interior of the case down with a microfiber cloth carefully, even used compressed air, all to no avail-dust is always there. What is the secret to installing your phone in one of these?