If anyone has a spare ambient reading accessory disk/cap/cover for an i1 Pro (such as from a broken or unuseable unit) with which they would be willing to part, please get in touch via the private message function here at ColorForums. I am missing one and would like to replace it. I know these are usually “matched” at the factory but I am hoping they are all similar enough to get give me a ballpark ambient reading for color temperature. I borrowed one from another unit and compared readings. The color temperature was identical although the luminosity differed slightly. Hopefully it will be good enough 
Thanks!