Tilt adapter at max still getting rings.

[Dunc78]

With Lunt LS50THa and asi120mm mini tilt adapter still getting rings with the tilt adapter maxed out see pics. Tried rotating the camera. I literally have to put mega angle on it by hand to finally get rid of the rings. Then only half the sensor is usable because of the extreme angle.  Id thought a small bit of tilt would do the job. I'm I looking at getting a different camera here or has someone with this set up solved it?

[Altocumulus]

Seems a little odd. Have you examples of the rings when in that tilter?