You mentioned you turned the connectors, correct??? Have you been able to find anything that is commercially made so those of us whom would like to try this (namely me for my two girls) could make this set-up work?
Yes, I turned those connectors on a lathe. I haven't seen anything readily available, but I haven't really looked either. You could use a small eye bolt, but it would be heavier. These ends weigh about 5 gms each.