In the script for a particular effect is a line:
wait (x) where x is the time in seconds before the desired result will deploy.
Find your target, and change the wait time.
I have not tried to modify original scripts, as I don't want to screw anything up. But the wait time is important for new map effects.
I am not a great scripter, but if you go to
http://www.dafront.com/~nemesis
and go to the scripting forum there, Vonderbakluft will surely be of better assistance.