How to switch between pigment and dye in Epson R280

[twinkle]

I've been using pigment inks (Image Specialists) in my Epson R280 since it was new, but could never quite produce perfect ICC profiles to dial out enormous cyan cast Epson drivers give when using pigment inks on this printer. I just ordered dye inks from Precision Colors, but I am not sure how to go about flushing ink currently in the printer. I have read in the past that mixing pigment and dye inks might cause some gelling. I will be using new carts, so don't need to flush that. Any advice would be appreciated.