For the correct working of your car
All dummies have their correct id, they were obtained from the game's native files.

To solve the "preview2" problem, follow the steps below.
In zmodeler 3:
Remove "Parts" part in a banch "Preferences->Filters->GTA Rage" found
in Settings->Profile->Editor.

When you make a car with several tuning parts, you need a doll with ids to separate each piece that you will modify. If this piece does not have the correct id, you will not be able to change this piece, that is, in the game this piece will not be turned off and the new piece will be over.

Include:
Misc A-Z
Misc 1 - 6
Misc Grille
Extra 1 - 5
Extra 10 - 12
14 Exhaust
Mod_Col 1 - 5
bobble_head
bobble_base
engineblock
pedals
sblade_1mod
fblade_1mod
attach_female