How did you manage to "eliminate" any perspective distortion with such a huge panorama. I find that the larger the pano, the more likely there will be some distortions, perspective-wise.
I used my zoom lens at around 90mm and that takes a lot of the distortions away. In other words the further away you are from the object (in this case the mountains) the less amount of distortion you will encounter.
How did you manage to "eliminate" any perspective distortion with such a huge panorama. I find that the larger the pano, the more likely there will be some distortions, perspective-wise.