Lead field is different

Hello,

Computing the leadfield with a defult subject then with another subject (example of the vectorvieb in BST)
with the same MEG channel, it change a lot the leadfield why?

Thank you
Regards

Why would it be the same if the anatomy and the registration are different?

If you think there is a problem somewhere: please illustrate your purpose with graphics, and provide instructions for reproducing the erroneous behavior.