Hi Curious,

re:
> *** 2A- Has brand new geometry in the detail region and on this I am not able to apply any kind
> of fillet at all!!! Could someone please tell me why I can't apply even .02 fillet on the blue model?
> What is defective on it compared to the green model?

I've attached a version of this with simplified extrusion geometry like described above and this should have a better chance at being filleted although it's still a difficult case.

But if you select this you should be able to get a fillet although you can see the juncture at the sharp points is a little weird:





- Michael

Thanks Michael for all your explanations. I might come back with some follow up questions.
Either way you are amazing!!!!! Thank you and the community.