I want to rotate a NURBS curve control points. On it there is a plane following de curve. If I tilt the control point for example to 90 degree, it rotates like to 80 degree. And to set it like 90 I have to put it to 140 degree. With bezier curves there's no problem. I put 90 degree to tilt bezier and it tilts exactly 90.

[<img src="https://blend-exchange.com/embedImage.png?bid=ReSzrpVw" />](https://blend-exchange.com/b/ReSzrpVw/)

Here the NURBS curves tilt images
[![trying to rotate 90 degree but looks like 80 ][1]][1]

[![here a frontal view][2]][2]


  [1]: https://i.sstatic.net/sLrot.png
  [2]: https://i.sstatic.net/Qej6M.png