When using the XV-01 universal shafts (#54515) in the front of a Type S, I found that a spacer is needed between each of the (top) 5 x 9mm ball connectors (BB5) and the F1 / F2 parts (#51293) so that the ends of the ball connectors will not foul and dislodge the wire retaining clips on the universal shafts when the car is in motion. I used a 0.5mm thick spacer on each ball connector, although thinner spacers may suffice.