Thanks Kostas. The pup has a turntable on the front axle. Due to the small clearance between the front suspension and the bottom of the trailer, not a lot of detail is required here. The front suspension is attached to the bottom of a plasic plate with a hole in it, that would allow for the passage of air lines. Another plate of the same size with hole is attached to the bottom of the trailer frame. I then made a round disc with a hole in the middle, same size as the other holes. The holes are then held together by a small strip of C channel. The picture bellow shows a turntable for another project but gives the general idea. I hope this helps.