I am having no luck with applying the screen protectors for my air - I either get bubbles that won't go or bits of fiber stuck under it. Both are making the screen look horrible and to be honest, makes me enjoy using it less. I'm usually overly protective of my iDevices with cases and screen protectors for each of them but usually there are no bubbles. Do I need a protector for the screen on the air? How scratch resistant are they? Thanks