I just installed a set of ConeColorPro inks that I purchased this past December in my Epson 3880 this past week.
When printing color images on Epson Exhibition Fiber using the CCP-3880-EPexFiber.icm profile that I downloaded from your web site, all my test prints had a distinct color shift.
I then tried a profile that was on my PC dating back to 2011 Epson_SP3880_Exhibition_Fiber_Paper_PK_v1.icc and the color shift was gone.
I was printing directly from Photoshop and I also printed from Qimage and all had a color shift until I changed profiles.
I would have expected your CCP profile to have been the benchmark standard with your inks.
Can you shed any light on this for me?