got to discussing the rear door check spring with one of us kind of people and I realized I still have a set of CB rear hinges. so we dug them out to play with them a little. one spring broken as Normal one still good. so dug threw my stash of springs and found one with eyelets on each end that I could reform to fit the . this is the results. if you have never seen this set up it might be interesting. the pictures is of the original one. were it goes, how it fits on the leaver and the hinge frame. the hard part is to find one that small a diameter that heavy. as the hinge has to pass over it as it closes
https://www.youtube.com/watch?v=XhThW2BndL0
https://www.youtube.com/watch?v=XhThW2BndL0