FollowAndRotate Not Closing The Circle Path?

[BallBearing]

I can overcome this and cut the model to halves and make flips & join the "good" halves.
I have 24S circle * 15 degrees = 360 deg. Perhaps I'm on a wrong way...
The photo clarifies the question:

[Dave R]

Why are you using Follow and Rotate to make that shape? Native Follow Me would make it correctly.

[BallBearing]

Here is the reason. It has to rotate:

[Dave R]

I see.

Check to see what the angle is on that last section in your first screen shot. It doesn't look like 15°

I can see a better way but I need to think about the numbers.

[BallBearing]

The last section extrudes turning less. Overlapping etc. Well the plug-in is still very useful when I can cut and join the halves = solid object. This was (the last twisted torus) extruded from an involute gear. 12 tooth. A quite heavy task.