Hi @nobody0499,
Unfortunately, I don’t think refining the mesh will help in this case. The issue lies in your CAD model, it has many small faces that will make it difficult to generate a high quality mesh, for instance:
In that case, my advice would be for you to cleanup your CAD model so that the least number of faces is present. For comparison, take a look at the plane wing on this tutorial:
The boundary layers seem to be collapsing and the divergence happens in them:
Does that help?
Best,
Igor