I would try loosening the bolts and moving it over then retorque the bolts. After doing some work on our cruze I have found more loose bolts and nuts then I would care to mention. I recently replace the exhaust with a 2.5 inch cat back. I was expecting a hard time under the car to loosen the bolts from the cat! Well I got down there grabbed my breaker bar and *&$#, nearly broke my knuckles because they were only just tight. I would not be at all surprised to find the trunk lid bolts only that way also. I have a body kit coming with a trunk lid spoiler that has to be drilled and bolted on. my trunk lid is off center also. I will be correcting that before the spoiler goes on for sure.