I have been having issues with my 1600 reaching 300 and holding Temps. I just contacted Danson support and they are sending me a new temp probe for the inside of my chamber and.......................here's the part im excited about. They are sending me a shipping label to send my controller in to be flashed with an update. This should fix my temp problems I hope. It is also going to add the 10 degree increments to my 1600. He said that its 2 days travel each way to ship it and 1 day to flash it, so 5 days total. Just wanted to share the news about the controller update with 1600 owners.