How to change mesh y-0 and x-0 coordinates?

I want interactive control of the location of the mesh worked properly and was next to him, not a thousand yards from him, I think it’s a problem of the Creator of this asset, it is not translated meshes at the zero coordinates when exporting, and I don’t know how to fix it quickly.
To work with the scene is impossible, I want to return the money for this asset…

U can see my problem at video Desktop 08 21 2017 22 13 17 437 - YouTube

Thanks in advance for the help!