Hi rom, it looks like it might be more of a problem with fillets made in v5 where there is an unexpectedly large gap between the fillet surface and the cylinder surface.

So it may be fillets that need fixing up more than or in addition to the mesh exporter - I'm investigating it.

However as mentioned above if you set CentroidTriangulation=y inside moi.ini it should fix the mesh export for now, can you confirm that?

Sorry I didn't understand what you wrote originally!

Thanks,
- Michael