Contributing factors to meshing failure

since ive started working on higher fidelity meshes whilst attempting to get a high accuracy tesla mesh i have been getting very routine meshing failures so i was wondering whatfactors might contribute to this, this is my second version of the mesh and i belived i took account of all the issue that were found with my previous mesh that may have caused it to fail, i was wondering if the shear tiny face sizes may contribute to thois meshing failure or if there are other factors that may contribute, thanks
alex

foir example this front is 1,340,000 tris

Hi @Lemlurker sorry for the lack of response here. I have posted an updated under your follow-up issue at How to prevent meshing failure