Hey Tim,
I understand about the webbing and stainless rings mentioned in a previous post, very similar to the Tornado System....Only issue is,,,Can you adjust on any point of sail with out loding sail shape or jib?....
Stick with the spectra. I have another idea to put tension on the line although I dont think it has to be "real tight" you can slide the cars forward an inch or so to make up for the slack
capiche?
Eric