It is common if you have an aftermarket rear end, most notably with a Ford 9" rear, that your front rotator plates for the torque arm are not perfectly straight up and down but angled towards the front of the car. This is because the torque arm mount on the aftermarket rear end is further front than on the stock rear end.
The front rotator plates move less than 1/16" with full suspension travel so as long as they are not bottomed out on anything it is fine that they are not vertical, it does not effect anything. If they are bottomed out you can shorten the torque arm about 1/2" by threading the top rear rod end all the way in and then matching the bottom rear rod end and adjuster, this will shorten the arm.