ZBrushCentral

Sizing Issues Exporting and Importing for Photogrammetry. URGENT.

Hello, So I’m working in cleanup for a conservator scanner and zbrush keeps importing the file in progressively smaller or larger over the same subtool and smaller again when exporting the finished Obj. The placement of the files is very important for the client as they are using photogrammetry. I’m only receiving the obj. The first attachment is what they’re coming in as and the second is the files I need to clean. Colours do not matter. The client is using Maya.
How do I retain position and repair the files I’ve already cleaned?

Screen Shot 2018-02-06 at 12.59.14 AM.pngScreen Shot 2018-02-06 at 12.58.56 AM.png
Thanks so much,
A