I'd always had problems with my earlier Phase One files having several blue lines across the upper half of the image and the default settings were shinola.
FYI
Today I updated my ACR plug-in to v3.5 along with the DNG application supplied in the download and ran some captures through.
Although the Phase One backs aren't listed as being supported everything worked fine and the default ACR settings for these files are quite better than they used to be.
Finally.