Having trouble with a track

Ok, On the construction kit I make a 3d model of a hypercoaster that has close crossites and a big spine but it never fits when I try to resize it. And my track packager doesent work so I cant make the 3ds object come with it exept a ZIP folder

In the editor, you need to go to preferences and uncheck 3ds auto scale and auto center. After that, the imported object's node needs to be placed exactly at the origin (The black 4-side star at the center of the editing template). Use snap to 1m to accomplish this.

Thank you soooooo much! I wish can give you something in return but im sorry I don't know.