Alexander has asked a good question.
If it really is low on opposite corners, as you make it sound (first post above) then you may actually have a bent frame.
Use the term dirvers side or passenger side to clarify the point. After rereading your post, I think you mean the drivers side, whether viewed from front or rear.
Otherwise, almost ALL of'em are a skosh low on the driver's side. Add one small, medium length, soft spring leaf above the existing spring on the drivers side front, for a cheap fix.