I must add that doing all of that kind of model and object box positioning has been made way, way, way easier in the
new version of Traxx (1.5). You can use the keyboard
or the object dialog box to position models, you can see the results in realtime, and the accuracy to which you can adjust everything has been taken to six decimal places!
Anyone who hasn't made the switch to the new Traxx, for use with all of their new projects, is... in the dark.
The new keyboard commands are brilliant, just check out "keyboard summary" in the help menu.