Bens1984rx-7

So, when you go to open the sun roof you spin and spin and spin and nothing happens whatso ever. hit the top of the sun roof and spin and sometime it catches and goes up. Once its up it won't go down by spinning... but puch on the top and it goes straight down. When it is down you can just pick it up though. Long story short. How could i fix this or does anyone have any idea whats going on? Thanks, Ben