We don’t know the dimension of your custom printer.
So we can’t compare it to the config settings.
In what way “off center”?
To the OOR error:
Move out of range: 0.000 236.000 0.000 [0.000]
This more than it is set in the config:
[stepper_y]
step_pin = PB10
dir_pin = !PB2
enable_pin = !PB11
microsteps = 16
rotation_distance = 40
endstop_pin = ^PC1
position_endstop = 0
position_max = 235
homing_speed = 50
But what did you try to achieve with these?
...
[stepper_y]
step_pin = PB10
dir_pin = !PB2
enable_pin = !PB11
microsteps = 16
rotation_distance = 40
endstop_pin = ^PC1
position_endstop = 45
position_max = 235
homing_speed = 50
...
[stepper_y]
step_pin = PB10
dir_pin = !PB2
enable_pin = !PB11
microsteps = 16
rotation_distance = 40
endstop_pin = ^PC1
position_endstop = -45
position_max = 235
homing_speed = 50
...
[stepper_y]
step_pin = PB10
dir_pin = !PB2
enable_pin = !PB11
microsteps = 16
rotation_distance = 40
endstop_pin = ^PC1
position_endstop = 0
position_max = 279
homing_speed = 50
?
You may have a look on this: Understanding X and Y Axes Limits and Homing
BTW: How do you know that all the macros in macro.cfg are needed?