Problem with loft feature

[feu_ceramica]

Hello guys, im having problems lofting two faces, anyone has a guess of whats going on? I put some prints here to help underestand the issue. I tried other strategies but they are always weird

[davebYYPCU]

Adjust Mapping handles.  
Fusion gives you some white points on the profile boundary.

These white points can be click dragged around the profile, paired up as red lines, when selected,

aligning them so that they do not cross over each other, might help, 

Might do better with added Rails, 

or change to rectangles, and sweep a parallel “fillet”.each side.

Might help…..

[jhackney1972]

Please attach your model so the Forum users can take a look.  If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

[TrippyLighting]

I've made some assumptions based on your screenshots.
I would not create this as a single loft.