I have trouble removing the keyboard on my hp g71,can you help?.

I have HP G71 laptop with a few keys missing on the keyboard.I have decided to replace the keyboard and after several attempts to find a manual, I finally located it on ifixit,anyway,I found the info I needed and proceeded to remove the defective keyboard, after following the directions I removed the necessary screws but the keyboard would not come out and it seems to be stuck, is there a procedure that I am missing?.