Q. How do I line up the axes on two or more charts stacked on top of each other? The scaling makes the axes slightly different lengths, so the tick marks don't quite line up.

A. Use an AxisPosition AxisConstraint - for example: plotSurface.AddAxesConstraint(new AxesConstraint.AxisPosition(PlotSurface2D.YAxisPosition.Left, 60));

Q. How can I change the formatting of numbers on a LinearAxis?

A. Use the NumberFormat property. Useful information on how to specify a number format can be found here and here