Haha, that my friend is an age old question.
At one point I think I started criss crossing them to get a rig to level out.
The instructions used to tell you what side, but what we discovered is that those instructions were for Aussie's and their right hand drives. We had better results going opposite to the instructions.
On a right hand drive both torque and driver weight push the right side down.
Here the driver weight pushes the left down, and the torque drives the right down.
Its been a long time, but try high right on the rear, and high left on the front. Pretty sure thats how I was getting them straight. If that dont work, you'll have to play with it.
If you put both highs on either side you will have to live with an uneven rig which may or may not bug the crap out of you.