^^^Those vids are gold, for setting these up and tuning them. The written directions are excellent, but those vids are priceless. Things are different for this trigger now, over when I bought my first one. I bought a Hi-Speed DMR, and it was already set up. Now, you just order the Hi-Speed, and you get the National Match springs, the DMR springs, and the Service Rifle springs - and you have to set it up. So, literally, my first one was a "drop-in" with it being set up. I ever tweaked that DMR, never needed to. The next one I bought, years later - I had to set that one up. The one after that was in the @Matt.Cross Mk12 Mod 1 Grendel. After going through a couple of them, it's easy to do.
Working on these triggers, and setting them up, makes the setup on other triggers easy as hell, too. I remember all the flak a few years ago on the Elftmann triggers, where guys would mess with them, and they wouldn't work right. TOO easy to set up an Elftmann, and I did that for Neil here.
This is great information for adjustable triggers, Jim - doesn't matter what kind they are. It does show the superiority of the Geissele Hi-Speed, though. I don't use that phrase lightly, either...