Wow nice trucks,but where is that screenshot from? Doesn't look like OFP ground texture?
Sorry I can't help much with the bumpers,only thought I would have is by making the front real light in mass...
You said you tried that? But did you select in O2 where it "doesn't" apply mass to all areas and just lighten the front?
The picture was rendered.
Ingame pics will come soon, at least i hope so!
Well yes i tried alot with the masses, the rear Bumpers remain as they are... ***
Well i forgot to tell that i´ve noticed this problem on other addon-vehicles, too!