Thanks for the quick reply.
Unfortunately I'm using the trial/free version with saving disabled.
On the first result the fillets were created as separate surfaces..I could just delete them, and the original was still below it unchanged.
What I really wanted to do was a much wider fillet but higher values produced worse, or no visual results..I just used smaller values to have something to show for troubleshooting.
I guess I mainly need to learn what to avoid. Could I for instance have done the fillet first and the chamfer afterwards?
Or lofted/revolved that angle cut at an early stage to produce similar results but avoiding chamfer?
Or is technique irrelevant and the issue is with the "topology" itself and soft and hard edges are simply not friends in some cases?
It sounds like it's a technical issue with nurbs and not just me doing something wrong which is too bad, having a nurbs modeler in my toolset would be great.