So it started out with picking up a simple BC-454-A at a hamfest and has escalated to the point where I have also acquired a BC-696-A, a BC-459-A and the respective racks for the receivers and transmitters. I picked up most of the matching plugs for the racks from Steve Williams and have been cleaning up the racks to make them somewhat presentable. I need some help with your best recommendations on how to clean the pins inside the bulkhead mounted connectors on the racks. I don't want to risk breaking any of these since they don't appear to be replaceable individually.