Object appears fine in the inspector but stretched in scene

I came across a quite strange issue. I exported some models from 3DS Max to .fbx as usual, imported it to Unity and they looks nice in the inspector..

As soon as I put it into my scene though they're stretched in a different scale for each axis. So if I want to make the object look like in the inspector, I have to change the scale x,y,z to something like 0.8, 0.4, 1..

The thing is, that I need to have all these scales to 1, because I want to move those object in my game by calculating their size.

Anyone has any clue why this is happening?