It is the red:
You have your working area set to 2" greater than the nominal working area of the machine:
that should be reduced to 33" for Height (Y).
Are you using the center rapid position point to set center? Please note that that is not the center — also the 33" working area includes the overhang cutting area at the front of the machine.
Please see:
I would recommend drawing up the machine structure and working area using the Rapid Position points and setting origin at them and jogging around from them to see where the machine actually is positioned at for various positions.