Following up on the saga of my DF83V experience...
I decided to hold off on buying a new grinder, so no Niche Zero, Lagom Casa, or whatever... for now at least.
I did get 83mm Mazzer Burrs and switched out the stock DLC Espresso Burrs that Mii Coffee included with my Grinder.
D@mn. I shoulda done this much sooner. Much much.
All the finicky problems I was having are completely nonexistent now. My shots have been more consistent in timing and the flavor profile is almost where I wanted it from a Conical v. Flat type of conversation. The sweetness is more prevalent than before and cream is consistently baking up half my shot.
I need to experiment with whether I can get away from the Puck Diapers I was using because the old Burrs had me grinding so fine they were clogging the holes of my Unibasket (which I do like (the basket, not the clogging)).
Also, as part of the equation, I am updosing my shots by 2g: 22g in, 14g out in 30sec is my routine for now.
It was the guy at Varia who replied to me that mentioned a major difference in performance between Burr Coatings and the level of hardness which makes the biggest difference. For their swappable Burrs, the conical versions are all 1 design with 4 different coating levels. The harder the coating, the "cleaner" and less sweet the shot. Now whether that claim truly bears out, I can't say, but in my limited test case I might tend to agree.