Do you have anything in your trunk on that side?

 

i have subs, spare tire andjack in the trunk, but they are in the center. the only thing that could be causing uneven weight would be the sub box, but it's only about 15 lbs.

 

It's not likely, but the pigtail on that spring could have gotten turned to make that one side a little higher..

 

lol.... thats what i did when i replaced my rear control arms. i turned one spring the wrong way, when i got it back together i noticed it and turned the spring the right way problem solved. but it was only 1/2 inch taller than the other side.