Need help with rotor phasing

Like to give a update on this thread since a lots of people where good enough to give me help with this. I verified the balancer was correct with tdc. I purchased an adjustable rotor cap from jegs. I took the distributor cap that I had cut open the front so I could see where the rotor was firing on the terminal for # 1 plug inside the cap.It was firing on the trailing edge of the post. I then put the adjustable rotor on an aligned it with the post. Now the car does not kick back. Starts better,runs cooler and runs considerable better.This was a new msd 8388 vacuum distributor that was out of phase from the factory.