I am still encountering chargers, such as the EVI DS-100, that have the old Avcon conductive "claw" connector. It would be helpful to use these charging stations, since they are almost never used. I am looking for an Avcon-to-"modern" adapter. It could be the new J1772, NEMA 14-50, or something else that works with Model S. These are not stations that I own, so I cannot simply change the charging cable to the modern J1772 standard. Does anyone have any suggestions on where to find or order these? Used would be fine.