The image may be somewhat misleading. The horizontal zoom, results in an image of 85" wide. So it is extremely zoomed in. CCD inspector shows a tilt of 3-4 arc seconds.
Interestingly, I look through lots of past images and the tilt seems to change depending on where in the sky I am pointing.
Sound like flex, however I have gone through 3 image trains. All do the same. It's as if something is lose in a cell somewhere in the telescope.
Currently I am using a Moonlight nightcrawler with all screw in adapters.