hmm, racing is tempting :)

there is truck´s imd, could be added some pad below cargo modul.

and + screenshots for another version of arba, some more armored :)

https://ulozto.cz/!vmJmoKLVIjgb/arba-truck-zip

Here are screenshots of another arba. There is a lot of options and i have no decision for final shape.

download
https://ulozto.cz/!rShcouDQ6dxs/screenshots-zip

i need some hint about mirroring objects. Working in blender is nice, but mirrored part is transparent and textures are like on inner side of object, when game run.
The same result is in 3ds max8 too, but i am not much familiar with this soft, i use it just for boundaries and shields.

Im afraid I can't help so much on this. I only use 3DS Max to convert ships to the IMD format and make them useable for SW, but anything other than that is out of my league. Although I did try to use Blender one time, I had to leave it as every Model I tried to export would make the whole model Blue-shiny -ish at the end ingame

Maybe you could try to use a referenced IMD Model in order to make the mirror-effect?

Its a Reference with the name "Module" and it has a IMDFile without extensions(.) as the parameters.

ok, thanks for effort.
i find some orthopedical way to force work this feature :)
for simplicity i tested it on model of engine "mship_addgear02L.imd", it can be found in my models.

1. import imd into 3dmax
2. choose desired part A (in our case is just one part inside imd)
2. just do mirror (copy+ i did not tested) = part B
3. import imd A again
4. switch both part A, B into editable mesh
5. merge (attach button) B into A (1. click on part A, then via menu attach/attachlist select part B.)
- result must be 2 parts in one with name of A.
- This way part B inherit properties of part A. If need , then delete original part A.
6. Export as obj (as imd game crash)!
7. Make imd via imdeditor (still missing gbnd, gelp,...)
8. test displaying of model in game

and for blender,
i modify models with textures only (because i still was not capable learn, how add texture to clean model), all models finish via imdeditor = raw imd model ready for 3d smax, there are added GBND and GELP, then again imd editor to finish ref. points, textures, guns,...

little complicated, but i have no better (faster) way, when consider my knowledge about used programs.

i did little changes for linkor, fixed holes visible in detailed view, reduced number of parts = simpler settings for texture´s properties in imdeditor.

download
https://ulozto.cz/!2JgpYLgtf8wq/linkor-cbs-04-zip

there is next variation of Arba family

https://ulozto.cz/!bhfVFzqLggWu/arba-astrolab-jpg

i did test, using value -1 for type parameter: parameters, this operation made the same tranparent model as mirror via 3dsmax/blender, plus modul was replaced and turned from position 1,1,1 into -1,-1,-1 , when we imagine cube with diagonaly oposite corners. So i stay with my ortopedic way for now, thus it has disadvantages too, when mirrored object has some letters in texture.

The Heavy Transport does not follow the Mastif after switching the mothership.

Do you mean the Transport in the Ahilles system?

If so, are you still able to progress normally though? Because I remember having messed with the mission code quite much to make that part playable.

Yes and the meeting with Phantom does not triger.And in Gredos I could not pass throught the Intrasystem Portal