I should have maybe stated that as a well "sorted" motor. Its really hard to run the huge motors (4cylds, big triples, huge twins) with a "odd setup" and see any legitemate gains, or losses if the bike is still in its infancy and not having a good grasp on "what" it should be doing. When Mattoon had his 4 cyld setup with the time loc he was battling other issues at the same time as trying to figure out other things. IMO its FAR easier to try new setups on a bike that is well sorted and it will "normally" make multiple passes without worry of wrecking thousands in parts. I know Arlo messed with the time loc on his scimi and said he thought it worked but he also didnt run it for too long. Tim has messed with the time loc more than most Id guess at this point and if you were going to fish for info hes probably the one you would want to hound for info. I didnt like it because of all the bleeding and bs you need to do after you change the "jet" each time, and the clutch cover to run it is kinda goofy. Does it work? Im sure it does. The DD style would be fun to play with. Different spring sizes, lengths,etc. The more I think about it, I think the one I was playing with had springs that went from arm to arm, but I cant remember for sure.