Without getting involved in webbing or stitching, I have found them a fairly simple device to safely fix....but there are a couple tricks....first most important is that end coiled up flat spring in the white plactic housing.....that SOB is about a mile long and tough to get in place again....removing it has to be done carefully to avoid the mess, it's nothing other than a similar arrangement to a window counter balance spring...looks like a stove top...
I have found most of the mechanisms are almost identical....:beer: