I tried the combination on the far right in the picture. Was able to hook up the last trailer only once. Was down at the freight yard to unload some wheat. Made and error with 'Q' key and uncoupled the last trailer. Been unable to hook it up again. Thought I might be some script error. Restarted FS13 but no go. Reset the vehicle and trailers to try again. No go. I have the first trailer aligned perfectly, and checked every angle. It is impossible to hook it up again. You have to fix this so it is more forgiving. So it don't need to be so perfect when you couple them. Second thing is the truck is slower then a tracktor with the ingame agroliner. So why should I use this one? Half the pack works but you really want to create a "road train" like they have in Australia. And it seems impossible as it is now so 2 stars from me ( half the pack works )