As a possible test idea you could try removing the shock and then compressing the suspension to see if it goes straight or not. If the upper shock mount goes directly to lower - I'd say it seems fine. If not - there might be a potential issue.
Though I have no idea how easy/hard it is to detect any misalignment using this method. Just a thought.
Though I have no idea how easy/hard it is to detect any misalignment using this method. Just a thought.