hey Alex.
Starlight express have a really neat way of adjusting the sensor tilt to get the sensor lined up with the front plate ....using a laser pointer. They suggest a green laser, but it worked OK for me with a red pointer. It takes a bit of setting up, but in the end is waay easier and quicker than just trial and error. You need to be able to rotate the camera precisely and I used an old focuser draw tube with a 2 inch adapter on the front of the camera. Have to be a bit careful with laser safety as well..don't look anywhere near the beam
https://www.sxccd.com/support/mainte...n-sxvr-camera/
Cheers Ray