In a recent thread I had posted images showing a noticeable "glow" in the upper left corner of my images from a new STT-8300 camera - purchased in December 2015. The camera was returned to SBIG Repair last month for cleaning of the CCD chamber. I sent along a USB drive with some examples of the defect and Bill thought he was able to track down the problem. Well, after having the camera out for this weekend I was discouraged to see that I am still getting a significant "glow" in the upper left corner of my images. I haven't posted any exemplars this time as they are the same as other images previously posted. I have been using SBIG cameras since 1998 and I have never seen anything like this before. The "glow" makes the subframes unusable. I am disappointed [understatement] that after spending $5900+tax on a camera/filter wheel/filter package in December 2015 that I can't get defect free images from this camera. I would like to swap this camera out for a camera that doesn't produce defective images. Dean J.