I having problem in designing the handle of the displayed drawing

Here is my approach in CATIA. Note only the catpart have the tree functions saved.
in Catia i did the folowing:

Created the end sections
Created the side curves to act as guides
Created a plane to pass on top of the circle and on the top apex of the oval.
Created a mid curve as a spine
Projected this mid curve onto the angled top plane

This gives me 4 guides, 1 spine, 2 sections to follow.

Sorry, I don't know PTC Creo and don't have Creo to try this out.. but maybe the concept functions are the same in Creo you can use as in Catia.

LE: updated the model to correct dimensions

LE2: updated again the model with a new true spine resulting in what i hope to be a better model without assymetry.

I DO find the patch count in the print/picture interesting. Can't quite wrap my head around it..

Anyhow, the model builds very similarly in NX, with the swept form being controlled by 2 guides... the 'taper' from 20 mm to 16 mm is driven with lateral scaling. Didn't bother with the hole or keyway.

Here is what I made in Solidworks (see attached images)

Here's what I made (see attached images).

The drawing brings up some several questions though. Some dimensions don't make sense. Other dimensions are missing.

This is created in SOLIDWORKS. I assume the workflow will be similar in CREO

The Error image shows a difference between my model (red) and the one ASI created (green). But that's why parametric models are great. Change one dimension, and the models should match up.