prediction error using alphafold multimer

[sjnoh8]

Hi,

I'm designing antibody for my protein using RFdiffusion and ProteinMPNN.
subsequently, I'm predicting the structure of the sequence obtained from proteinMPNN using colabfold alphafold multimer.

I have a question about the structure obtained from colabfold alphafold multimer.

first, my protein is dimer. so, I predict that, designed antibody interacts only one protomer of dimer.
however, designed antibody seems to combine (interact) center of the dimer.
I think the antibody is slightly shifted.

Is there any solution?
What can I try?