When using M92 how is the C axis setting related to the X,Y& Z settings? I am trying to fine tune X,Y and Z so that the printed dimension is extremely close if not the same as the drawn dimension. So I changed the M92 line in config from M92 X100 Y100 Z1600 C100 E417:417:417:417 to M92 X99 Y99 Z1584 C100 E417:417:417:417 The issue is that when I reload this updated firmware the tool changer head no longer engages with the desired tool. It looks like the head is stopping about 1mm short of the tool so that C's rotating spigot can no longer engage with the tool. How do I adjust C to fix this issue? What is the formula? If I revert back to the default M92 line then everything works again.