ladder bar tunnin

I getting ready to take my car to the track in a few weeks. I want to get it dial in. The car has only been drivin on the street since finished it wouldnt hook. I just put a new transmission in it and i got a new set of hoosier qtpros 29X13.5 on it . It has ladder bars i was wondering how to adjust them to get it to launch and hook good on the track