I just put on my otterbox and it covers the very bottom where the light leakage shows. Now at least I don't have to see it constantly.
If you take a very small flat head screw driver and fit it under the plastic. Place it on the bottom part of plastic. You can use a blow dryer to heat it up to reform it so the light doesn't show anymore. Take your time on low heat, so you don't over do it and you will be good. I did this after I watched the video on how to take the TB apart. Crazy but it worked.