@simobone19 the axis limits set by M208 are for the head reference point, which is the point from which all offsets are measured. It follows that if a tool has a positive Z offset, then for that tool to reach Z=0 the M208 lower Z limit will need to be negative. So you can either set your M208 lower Z limit to -1.85mm in config.g or you can adjust the M208 lower Z limit in your tpost#.g file for each tool.