Well - you are into it now . . .
It has been a while since I installed mine, but thought the inlet rings came a bit earlier. Regardless, nothing that can not be reglassed.
Hard to see what happened w/o numbers.
Do the face alignment of the spinner ring flat area last. They ay stagger front/rear.
Trimming the split line a little along outside of the inlets can lower the inside. Just mind the diameter of the inlet holes.
Allow the top to settle on the lower half - don't try to force it our end up fighting installation forever.
To get the halves to repeatedly fit the same, the inlet rings will have to be installed.
The gap between upper/lower between the cooling inlet and prop ring comes before the stagger of the nose ring. In fact, there are tricks to make that area flat to match the prop. Not unusual.