no im pretty sure that i have a turbo 3, but i think that the knot that stops the bar from going all the way down has been compressed smaller or the hole that the knot is suppose to stop was made bigger. when i tried that system it would stop but if i pull the leash harder it will go passed the hole. but the is on land without the kite, so i dont think that the kite will pull that much when i activate this system
Ahh, I just re-read your post. Looks like we all misunderstood your question.
Yes, the safety is working as designed. When the bar is new I found that the knot will not slip through the rubber stopper as easily as it does when it is under load on the water. It *is* supposed to slip past that knot (that knot attaches the leash extension to the front line). I would recommend you force it up the line a couple times manually and then it'll work fine for you.
So, ignore my comment about a stopper ball, you don't need that. The bar should eventually slide up the lines as far as it needs to (about 1/3 of the way to the kite).