Randy,
Let's do a test.
Home your machine, mark a spot on one end of your table.
Zero in this location.
Let's use your long axis.
Then command a rapid move from one end to the furthest point you can on your table without crashing.
G00 Y(Value here, assuming you're using your Y axis)
Then command G00 Y0 and go back.
Are you at the same location?
This will tell us if you're missing steps.