Hello. I can not answer your question because me too I have a problem on the autoland, even if different. Landing on Cat.III runway it happens to me that after having intercepted the G / S the 777 follows well the path until it starts to roll and pitch (once or twice) and from that moment it can not follow well the magenta points of the ILS; the flare in my case always does, but the plane arrives, of course, on the track or too high or too low. I can only land manually. Yet on the another company (which I do not like aesthetically) everything works properly! On the 767 CS everything works well too! Help!!!!