Have an 07 North Rebel bought 2nd few months ago. Kite in great knick 
- the lines / bar have been used a bit more 
...
There are two rope lines running from the cleat (looks like a sci-fi laser pistol without the barrel - bloody bizzarre!!) through the sliding stopper, the bar, then down to the quick release (Iron heart?). The thinner of the 2 (approx 4.5mm dia) wore through. The thicker of the two carries the load and the depower. I did not have any trouble taking a few more beats before coming in (more than usual that is
). I reckon the thin rope only acts as friction for the stopper to work when jammed against the bar. Has anyone else had this occur if so did you try any other rope? I went to yatch chandlers and they only have poly propalene which is tough(er) but not flexible (has a tight weave + fairly solid core in comparison to the original). I have ordered another replacement but get the feeling it will wear out fairly quickly - (it probably is the wrong material) and having had a quick fiddle it looks like a pissant thing to have to do frequently.
Cheers
SF
you can buy a replacement kit from your kit shop......best idea is to replace the whole set of lines from the chicken loop up. It cost about $20... IS WELL WORTH THE EFFORT TO HAVE THE CORRECT LINES SO THAT EVERYTHING WORKS AS IT SHOULD, I have seen the result of people who have tried to substitute something else and it just turned out to be a pain in the ass for them. When I had north gear I replaced my chicken loop and depower lines once a season, even if they looked okay. I was probibly kiting 3 times a week so once a year didn't seem excessive to me.. I also waxed they small line where it went through the bar to help prevent wear. Jason at Briskites usually has the kit on the shelf.
