700W Sandwich printing issue

Hello, i am tying to print in sandwich mode and I'm having issues with the base color being correct but by the time the top color goes on its a completely different color. for example I'm trying to print a tan which i have printed before, but when the top layer is printed its printing a darker gray color rather than the tan.

This has opened up some other issues for me as well. I'm trying to make a custom ICC profile for 78pass with spot colors and every time i try to print the ICC swatch it gives me "printing error". i am using onyx go 22.5 latest version (updated incase it was the issue)

I never face your situation, so I'm not sure about the solution. But I found some useful threads. You can reference them. https://support.hp.com/us-en/document/hp-pagewide-pro-700-seriesc06380593 https://support.hp.com/nz-en/document/a-guide-to-ripping-and-printing-in-uno online-sandwich-modec06344688 https://lkc.hp.com/storage/app/uploads/public/610/3ad/7dd/6103ad7dd8590243594261.pdf