The springs are very simple affairs,in my Ikonta they are just 2 pieces of sprung metel, one in each film chamber, but they are in contact with the film and keep everything tight, but don't neglect making the film taut be3fore closing the camera back, I did when I first used a folder and had the same problem as you, although in an Ensign, my first folder,which I still have and use, they are great fun,give good results, and make friends, folk seem to like being photographed with them and then talking about them,RICHARD