Another thought! Printing on the Ilford pearl is only taking about half the time it takes on the gloss. Almost as though it's only laying down half the ink.
Usually a color cast indicates a wrong paper selection or clogged nozzles/
For example, (as you mention) the Ilford driver settings were different either in paper selection... forgot, and the Plain Paper was selected, your other settings sometimes follow the paper selection, and quality goes down as speed comes up, plus the driver being set to NO COLOR ADJUSTMENT now depends on a profile you are using which determines the colors and cast against a plain Xerox copy paper, you could get weird results.
Another item,,,, Ilford will give you free profiles for their paper, but they always had the "code" PDF file which contains the codes for which settings go with which printer and which paper.
If I recall something like IGSP112000_EPGn and that told you what paper to select in the driver and the settings for color adjustment etc.
It looks like this, but more extensive for each printer in the file.
You can download the PDF file from them, or maybe this link will work.
Fred
PS I just downloaded their new pdf file from this past MAY.