Can't fly over the north pole

Hi thanks for the answers to my previous messages.
Last evening I was flying the Beechcraft King 350 from Alert, Canada to the north pole. When I reached the N89* 30', I couldn't get any closer to the pole because my plane would go sidways, left or right instead of all four directions. In order to head back south, I had to go into slew mode and back the plane up a degree or two of latitude. Otherwise I would only be able to go left or right in an endless circle around the north pole. My only guess it's either a sim limit (like the 100,000ft ceiling limit) or electromagnetic energy between the north pole and magnetic north pole, causing the Beechcraft props to spin different.
I was wandering if any one tried to fly there as well? I want to eventually go on a multi leg pole to pole tour and take some snapshots and post them into an online travel log.
TW
Last evening I was flying the Beechcraft King 350 from Alert, Canada to the north pole. When I reached the N89* 30', I couldn't get any closer to the pole because my plane would go sidways, left or right instead of all four directions. In order to head back south, I had to go into slew mode and back the plane up a degree or two of latitude. Otherwise I would only be able to go left or right in an endless circle around the north pole. My only guess it's either a sim limit (like the 100,000ft ceiling limit) or electromagnetic energy between the north pole and magnetic north pole, causing the Beechcraft props to spin different.
I was wandering if any one tried to fly there as well? I want to eventually go on a multi leg pole to pole tour and take some snapshots and post them into an online travel log.
TW