Can anyone tell me where I can get a Nirex folder from where you can add pages? The one I am talking about is the A4 hard back Nirex type folder with 3 screws on the spine which allows you to add extra pages. At the moment I can only find a 50 page Nirex. I have been told by on-line shops to try a ring binder/leaver arch folder. But I need it to lie flat in my A4 DPM cover. "HELP ME OBI-WAN KENNOBI, YOU ARE MY ONLY HOPE"