I also noticed you were using quads and triangle with the export. you may preffer this so I tried with that.

The best result I could get with the model I posted was angle 7.5 divide larger than 3 and avoid smaller than 2. I still was left with some hatching on the back and a smalll one on the nose bottom.

Do these make a difference? does it render better than the version created by paq's proper network method? Maybe a render guy can chime in here.

Thanks for the time,
Burr