Scaling Body and Scene File in GMAX

[RoverTX]

I am trying to scale Axeface's Boron M7 down to an M6 to use it as the Boron Hyperion/Acinonyx.

At the moment I am importing both the body and the scene file into GMAX, and then selecting everything and using the "Select and Uniform Scale" tool to scale everything to 60%. Everything lines up and looks correct, but when I export and and put it into the game all the turrets, hard points, and engines trails are very off and further off the body.

What tool should I be using to scale the body and it's scene together? I know I must be dong something really wrong because even the "invisible weapon"s are off.