Cartesian Rectangular leveling issue

I have been trying to sort this out for quite some time.

## Z-probe

  1. See

zprobe.enable true # Set to true to enable a zprobe
zprobe.probe_pin 1.26^ # Pin probe is attached to, if NC remove the !
zprobe.slow_feedrate 5 # Mm/sec probe feed rate
#zprobe.debounce_count 100 # Set if noisy
zprobe.fast_feedrate 100 # Move feedrate mm/sec
#zprobe.probe_height 8 # How much above bed to start probe
#gamma_min_endstop nc # Normally 1.28. Change to nc to prevent conflict,

switch.servo.enable true # Enable servo module
switch.servo.input_on_command M280 S3.0 #M280 S7.5 WOULD BE MIDWAY, PS3.0 push down, PS7.0 push up, PS8.4 self test
switch.servo.input_off_command M280 S7.0
switch.servo.output_pin 1.23! # Must be a PWM capable pin
switch.servo.output_type hwpwm # H/W pwm output settable with S parameter in the input_on_comand
switch.servo.pwm_period_ms 20 # set period to 20ms (50Hz) default is 50Hz

#Levelling Strategy
leveling-strategy.rectangular-grid.enable true # The strategy must be enabled in the config, as well as the zprobe module.
leveling-strategy.rectangular-grid.x_size 325 # size of bed in the X axis
leveling-strategy.rectangular-grid.y_size 380 # size of bed in the Y axis
#leveling-strategy.rectangular-grid.size 5 # The size of the grid, for example, 7 causes a 7x7 grid with 49 points.
leveling-strategy.rectangular-grid.grid_x_size 7 # Must be an odd number.
leveling-strategy.rectangular-grid.grid_y_size 9
leveling-strategy.rectangular-grid.do_home false
leveling-strategy.rectangular-grid.probe_offsets 0,0,0 # Optional probe offsets from the nozzle or tool head false # If the saved grid is to be loaded on boot then this must be set to true
leveling-strategy.rectangular-grid.initial_height 10 # Optionally an initial_height can be set that tell the intial probe
# where to stop the fast decent before it probes, this should be
# around 5-10mm above the bed
my unit has a Z build height of 590mm
every time it probs a point, the Z axis goes all the way to my max end stop, and not 10mm away from the probe.

What i also noticed the LCD display show z at negative 1160mm after it does 2 probe points.
I had the 3 point plane leveling working correctly, but the rectangular is driving me nuts on the constant home to z max.

I do have the latest edge firmware

Any ideas where i have gone wrong.

Imported from wikidot

I think I sorted out the issue.!!!

If i home all axis

Do not leave Z at Max where end stop it on home

The Jog or tell Z axis to goto say z 10

then deploy probe and do bed level.

then all the probe points require around 10mm movement of Z axis.

Still confused why in config there you set 10mm, as that seems to do nothing.