Never flown a Robbie...but in most helicopters....roll the Nr back to the bottom of the green and see how the nose comes back towards center. Make a long flat approach to the threshhold....hold height about a foot....decelerate ever so slowly until the nose aligns with the runway and direction of movement and ease the aircraft upon the surface using collective...sometimes a bit of throttle reduction might be required. One should be able to hover or be very, very, slow at point of touchdown that way.
Left foot forward....good day! Right foot forward....bad day!