When using Decimation Master in v3.1, I get a wrong scale at the export, i.e. when comparing the original model vs the decimated in Max (not only in Max), the decimated one is tiny to say the least. Has anyone ever noticed this or is it just me? Can someone try and let me know please?
Please, update to ZBrush 3.5 R3 which is a free upgrade. The way the Tools scaling are managed are different and your problem should be fixed.
Thanks, I will let my boss know.