@droid1968,
Don't worry about the UV Mapping.
It seems the Autovista models has a small correct Uv mapping.
I have noticed some objects of interior needs a big scaling.
The UV mapping is still there, but it's needs scaling.
Look for my screenshots of the Lamborghini Reventon few pages back.
As you can see, the leather and stitches are very well mapped.
Before I did that, they were too small scaled.
I had to scale the UV mapping very big to get such results.
However, the engine/engine bay is a complete mess.
It's, it's not done, the worst thing is, buttons textures are needed for the engine??
I don't know, some UV mapping looks like overlapping.
Anyway, I don't know but Turn10 can't map the engine for shit.
But, as you might have known, there are always a few people who can do better than Turn10 itself
Just don't worry about the programs/tools.
Forza Studio is not the final release.
We should be very very glad we can import FM4 models.
Since FM4 is released, there are really nice new cars, wich FM3 doesn't have.
Hats off to Energien