Can Orthagnathic surgery be redone? Can Chin asymmetry be corrected? As per my pics, is bilateral an option?

Had Orthognathic surgery 26/06/12. Chin was moved forward to balance out the asthetics of my face.I feel like the surgeon should have done a bilateral surgery as my whole face now seems disproportionate.My smile is more "Gummy" than before and my face now seems too long.Teeth Midline is about 1-1.5 mm off centre.Orthodontist told me that my bite will never work if my midline is not correct. Have also lost feeling in the lower right side of my jaw and lip.My Chin is now assymetrical after surgery

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