Thanks for posting. We are currently researching possible replacements for that top pin of yours. In the meantime, however, I would like you to take a look a few parts and compare their measurements to your existing hardware. Please look at our
21-018 Bifold Fenestra Top pivot and our
21-019 Fenestra Bifold Bottom Pivot, as well as our
21-161 E-ring and
21-256 cone spring. Do you think these would match your current pins? Please let us know!