Color Shift

Hope someone can help we are at our wits end!

Had a Color 550 with integrated fiery and about 350,000 on it. If you pull prints from the beginning and end of a run of only 250 you can easily see colour differences. Everything was properly calibrated and profiled. Techs did not have an answer so 6 months later replace the machine with one having only 70,000 on it. Only thing the same is the rip which was transferred to the new machine.

Run first job yesterday and surprise, surprise same issue.

Anyone seen this?

Thanks
Jeff