I'm on my second ZT 350, and I have tried removing the torsion bar on both of them, but could never get them to open smoothly unassisted. Is there any trick to getting them to fly out with just the flipper? Without any wrist motion, I can only get the blade to open to about 90 degrees. I've tried adjusting the pivot, but I still can't get it to open like the ones I've seen on a few YouTube videos.