Dual Extruder recommended detailed steps out of box

[Hauke]

There are individual Z-Offsets for left and right, you need to fine-tune both. This is a long-known problem which Snapmaker does not seem to fix: DX Z-Auto off by 0.3-0.4mm: Reason found, no Solution? and DX + Bracing Kit: Flex and Z-Offset-Problem