I posted this as a reply in the archived LMF Swivel Feedback and decided to put it as a new post. I've changed out the heavy and slow shackle on the LMF Swivel with multiple others and even have two different Titanium shackles that I'm trying out at this time. I had to let some air out of the Title Perilous bag to slow it down while experimenting with these different shackles because of how fast the bag/swivel is moving now. I originally had the Perilous aired up quite Hard and even then with the original slower/heavy stainless shackle it came with was'nt that fast of a combination. The Jim Bradley swivel has a real lightweight components to their swivels to speed things up and they must be on to something. I'm trying to fabricate some of my own swivels at this time (Not the ball and hook type that rdshackleford has risen to the occasion with) and will post some pictures/video(once I can being a Newbie) at some point when I feel comfortable about the outcomes