Color stability Sawgrass SG800

We're offering normal print matter on paper accompanied with dye sub products like mugs, bottles, wood, alu...
In testing phase we check the colours of the dye sub products so it matches the normal products printed on paper, so it can be sold as a set.

Now after a while we see that the colours of the dye sub products are shifting (probably after installing new ink, same brand, not outdated).

The paper printers are calibrated each day and each month we make new paper-profiles.

Are some of you having the same problem with the colour stability on a Sawgrass SG800?
Is there a way to calibrate this printer?

Are you using genuine Sawgrass inks?

I'd suggest contacting the ink supplier first if the colours are shifting over time.

Yes, I'm using official Sawgrass inks.
I'll get in touch with Sawgrass asap, thanks.