I've got the original double tiered turning blocks on mine too. Rebuilding them made these work much better, but sheet kinks and the geometry on these suck. (Radical turns at the turning blocks is a no-no!) The shock cord sounds like a great idea. We don't use the turning blocks with the #1, but I've considered using a second set of jib lead blocks on the track to get a fair lead to the winch for the #2 and #3. They wouldn't have to be heavy duty since the load will be on the genoa lead blocks. A Schaefer 17-87 Spin pole slider at about the end of the cabin would do the trick. I can hear the crew that stub their toes on this cursing already. Anyone tried this? Thanks for any advice.