Hi Jason,

re:
> I wonder if there is a distance from 0,0,0 that can be at issue or units maybe?

There can be an issue with things far from the origin but it's if you're something like 100,000 units away from the origin. There isn't any kind of issue with it for your case here.

Your case is just that one piece is an exact circle and the other piece isn't a circle.

- Michael

Thanks Michael. I may have concentrated on the cylinder too much in this instance and not the rounded base plate!

Hi Jason, I've attached a version here where I've replaced that piece of the base plate with an exact circle. I moved your other circle over there and trimmed it, your lines appear to be all set up well.

Is it possible on the other one that you turned on edit points, then moved a point somewhere then rather than undo you moved the point back? When you move a control point like that MoI assumes that you're trying to squish points around and replaces the exact circle with a general spline curve that is not an exact circle anymore. So for the particular case of a circle moving a point and then moving it back to its original spot will not result in the same exact starting curve.

- Michael