Just as an aside, I'd replace that style trim strap with one of these:http://www.clamcleat.com/uploads/cleat_ ... cleats.pdf
They are super nice and easy to install, makes for simple and quick depower line replacement when the time comes, and you get to play the adjustment of where you want it on the line before you do the final trim and knot. A few brands are using it now. They are cheap and you end up with a much much cleaner looking system. So nice not to have all that stuff right in front of your face!
I find the webbing straps eventually start to slip when they get worn a bit and its always exactly when you dont want it..... ie powered up on a small kite and its gusty. They tend to slip when the lines go slack for a moment and then tension up hard in a big gust. Soooooo anoying and fairly unsafe.