I recently purchased a pack of 3ds ships out of the marketplace and some work just ducky.rella.

Others look great on one side, but the other side is missing some major polygons

I have also tried importing other 3ds files and they look like a freeze frame 1 millisecond after a very large internal explosion.

I guess I'm frustrated and at my wits end, I did try searching the forums, but I read really fast, and it got really confusing really fast, so I'm just asking straight up.