Dave, I'm interested in your stock setup - mine is stock too but it doesn't work well at all. I have a swiveling cleat on the starboard side of the mast above the mainsheet downhaul cleats. I don't believe the jaws are adjustable. The spinnaker halyard releases by pulling it up out of the cleat jaws, but then it goes a bit outboard and down to the trampoline. While I'm snuffing the chute the line recleats itself every time.