However I do have a problem. In printing the fans I realized that the machine setup needed more tweaking so I used escher3d calc.
After much trail and error I did manage to get 7 point zero reading, Hooray

The 2nd fan turned out worse than the first. I used a 7 point measure with 7 point calc. Now the fan came out twisted Or maybe leaning.
In other words the part is shifting to the right and to the back as in builds its layers. Does any one have suggestions on how to compensate for this.
Since I'm new here I will tell ya a bit about myself. Briefly.
20 yr long cnc multi-axis programmer/ machinist, aerospace and prototyping. A hands on guy.
I build and fly giant scale RC planes.
I build and run garden scale railroad trains.
I like to build and tweak computers.
I also like to dabble in sim racing and have built a nice racing sim rig in my living room, And yes,, wife approved.
Im 50 with a wonderful 17 year old son, Married 25 years to my wonderful toy loving bride.
Like most here I just love to make things and learn things new things as I go.