posky 747

I downloaded the posky v4 747 and got the gears fixed but now the rudder dosent work after 50 knots so turning onto a taxiway is out of the question andbody know how to fix this problem.
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https://forums.simviation.com/phpBB3/viewtopic.php?f=21&t=62632
So did anyone have the problem with the rudder not moving until i reach 50 knots or above anyone now how to fix this?