Layer Shift at First Color Change P1S + AMS – Help?

I’m getting a consistent layer shift at the first color change during multi-color prints. After that, all other colors print perfectly aligned. This happens every time I try a multi-color print. I’ve printed a lot with single color very successfully.

I haven’t made any 3rd-party mods to the print head or covers. I watched the print closely, and everything seems normal—no grinding, skipping, or hesitation. The shift looks identical each time. I’ve tried with and without “auto-recover from step loss”.

Any idea what might be causing this or how to fix it?


Disk

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I have the same problem with a P1S when trying to print multicolor.