He said its a spin cast reel Unknown, You do have to take the face off of a spin cast to change or add new line. And for the question I don't know what type of reel you have or which piece you are having trouble with so I don't know what to tell you. It should be only one piece thats troubling you right? Because you need to put it back in the order it came off so you should not be adding parts out of order right? The only part I have ever seen give anybody problems would be the spool but there is no reason to have taken the spool off. You only have to remove the cap or cone on a spincast to add line. Can you be more specific so I can try and help you better?