so since i've had my car (about a year) i have never been able to get the sunroof to crack open. It opens all the way, like when it slides back into the roof, but the back end won't lift up... i'm not really sure how to describe it, i think you know what i mean. i'll press the button forward, the cover will slide half-way back into the roof, and the sunroof itself will only lift up about a centimeter in the back... I can push it up the rest of the way, but it won't stay. anyone know anything i can do about this? thanks.