well thanks for the wealth of replies:SNSign: It turns out that its pretty normal for this to happen when changing TB&intake plenum....as long as you can push the pedal and got WOT its all good.
its in your mind, there is no slack... i have the same mods... its an illusion. only reason you notice now is that you actually had to mess with it. its not slack. still dont believe me? get someone to put the pedal to the floor.. does the TB open all the way? i rest my case.