This slack issue has been beet to death for years

I had a guy once insist there could be no slack at all any time because he could feel the lag difference when in a stall turn,, he insisted he could notice the micro second of lag as the line went slack then tight again .. Yes he told me he could notice the rudder not pushing the tail quickly enough,, not the rudder redirecting the wind over it, but the micro force of the rudder moving the static air..

I think there are some guys that way over think things, just about all my pull-pull systems have been crossed for easy of set up, and a little slack is no biggie