I think I see what you are doing...you are running the down the middle, cinching it down and looping it around to the stop/swivel located at the end of the throttle lever. You're clamped down tightly I assume...
I have run mine 2 different ways, as the red and black lines depict. The red is using your existing clamp down and then attached to a swivel in a different spot, the black is running a different way, with the clam being where the square is, and the circle is where the swivel would be.
Sorry about the pics, I'm on someone else's PC...