grizclk320

Hi all, I am new to this car and am slowly figuring out all of the little things about it . I will be posting a few notes for some help here. First one is about the rear window shade. I honestly saw the button on the dash for it and didn't know what it was so I hit it. Up came the shade just as it was supposed to do. Problem is it will not go back down. I do hear a clicking when I hit the down button so I do not think it is electrical. I had a friend hold the button down and it is very tight and will not move. Anyone have any ideas on this. Maybe some trick I do not know about? Thanks in advance....