Splines and loft problem

[Bastholm]

Hi, first time I am posting in this forum! I have already found many good tips in here!

I’m in the furniture business and using Inventor for these designs. 

Recently I’m started to draw more and more organic shapes and at the same time meeting more and more problems. Often, they can be solved by surfing around for new ways, but this one I can't get my head around what’s wrong.

I’m trying to make a round and organic end on an armrest using splines and loft. I have used this technique many times before, because it is good when you are modeling from hand sketches.
But now I can’t get it nice and smooth. What should I look for?

I have been checking that all splines are going through the correct point and trying to simplify splines.
I have also tried to adjust the loft conditions with no luck.  

I have attached some pictures and a ipt. file 

[Gabriel_Watson]

It is funny that it looks fine when I try this here.... in Inventor 2022.2

Have you experimented with the other point conditions? Try Tangent maybe?