Need some help with rear axle position

I took a quick measurement from the frame rails to the outer lips and there is an inch difference between the two. Drivers side lip is 14 inches from the frame rail and the passenger is 15 inches.
The springs have been moved to the chassis rails and it has 8 1/2 wheels on it now. Dropping an inch or so should keep things from rubbing.
Thanks for all the good ideas