After 6-8 months my whoopie sling suspension have started to squeak. I tried changing to point of contact between the line and the wall mounts and that didnt help. Today I swapped out my whoopies for rope(sorry about the four letter word) and the squeak is gone, so its not anything other than the amsteal.

Any idea what is causing the squeak? The amsteel appears fine, with no wear spots or frays.