Awesome!!!
While my other printers (not CoreXY) have the homing position and the 0,0 origin at the back/right of the printer...front left works for me too, kinda the same thing if you rotate the whole printer 180 degrees.
Following the directions from the link that you gave me determined that my motors were swapped.
Homing now positions the carriage at the rear/left or X0, Y300 which is where it needs to be for Home, sending the carriage to the origin at 0,0 places it at the Front / Left where it needs to be!
Thanks for pointing me in the right direction and helping me sort this out.
J