Thanks, look good.
I'm having difficulties in replication your loft correctly. Did you make the 3D curves by intersection curve?
had to split the surfaces to the same size of the small surface, then start a 3d sketch, select the edges and covert entities, do that to both sides.
then start the loft, select the 2 sketches, look at the one I did, in the proporty manager of the loft go to the start and end box and select the tangent to face option for both.
the big thing is what you are making is a very advanced surface model and it has taken me along time to know these tricks, 25 yrs of surface modeling CAM and other CAD packages.
Trial and error and error and trial and fail and works and not works and ....you get my point, every model is different and what works on this one will not work on your next.
it takes time.