Every time I do an autoland with the 747-8 the aircraft bounces as if I am going too fast although I have slowed to the correct approach speed and have flaps set correctly. This does not happen with the 747-400. Has anyone an answer to this problem.?

It wouldn't have to do with the add-on itself but I think it would have to be the weights. You may have metric system loaded in your Load Manager but Imperial system within FSX. This can confuse both program's and give you an incorrect fuel load as well as making you fly heavier/lighter than you expected