@osterac in 3.4.5 and earlier you can use any S parameter value of 10 or more. It's the ratio of X , Y and Z to S that matters. So your original command:
M556 S1 X0.0183381 ;Axis skew compensation
could be replaced by e.g.:
M556 S10 X0.183381 ;Axis skew compensation
or:
M556 S100 X1.83381 ;Axis skew compensation
In 3.4.6 stable of 3.5.x your original line should work.