Thanks again for your replies Andy.
My CNC Router has Home/Limit switches but the actual machine is sitting in in another site and I've brought just the controller box home where it's more convenient to work on.
I've got them currently set to Normally Open so they don't trigger on me but will revert them back to Normally Closed when I reattach the box to the machine.
Setting the NO_FORCE_HOME=1 under the [TRAJ] section definitely did not work for me. Not sure why.