JCS Dual trigger

What do you mean it undoes itself? In my experience, that trigger is a royal pain to setup using the method JCS intended for this trigger. I messed with the thing for over an hour and I couldn't get it anywhere near as nice as I expected so I deviated from the instructions. I basically just put the pen spring back in, took the second spring out entirely, and messed with it until the pull was really short. The pull distance to fire is very short and there is a little extra pull after firing but it's extremely light so I can walk it much faster than I could when it was setup "properly". Of course, this was just done out of frustration and it worked out but I've heard of other people doing this as well. I would just keep messing with it or try what I did if you get fed up with it. In theory, their method should work fine but for some reason it's way harder than you'd expect to get it to work well.