Contact points?

For some time now I have been enjoying flying the excellent Avro Lancaster B111 ( Special) Dambuster by David Garwood, but I have noticed something strange. It appears to land about 2 scale feet above the runway and only settles onto the ground when almost at a standstill. The same happens, only in reverse when taking off. It leaves the ground by about 2 feet at very low speed and stays there until it obtains a rotate speed of around 120-140 knots. I