Hello there;
First at all, thank you for your time, also I am sorry for my english.
Secondly:
-OverrideTexture: Trying to combine arc pack with the jet pack:
The only thing I was able to make, it is for the unit to fly wihtout the jetpack, since the game crashed while I tried to add the jetpack to the current .msh file...
Thank you, Franer.