Could very well be that, if you have adjustables on the front, take a little out of the left front, if not go back to where you were and see if you take a little out of the left rear to get it more level. You can also level the car with a ladder bar adjustment, but that's tricky if the ladder bars are set equal. You could pull the one front heim joint and make sure the bolt slides thru the heim by hand, that will tell you if they are out of adjustment. I had a friend who's name i won't mention tried to change the pinion angle because he went to smaller dia. tires and and when he took it off the jack the right side was 3" different than the left side in height. He took it to the track and one of our friends who's pretty good with suspension took about 15 min. and releveled the rear end with the ladder bar adjustment and the car left strait and hooked better than ever.
Zip.