Manual mesh bed leveling issue?

Hi!
Using an Ender 3 with a warped bed, so I got the TH3D firmware to get mesh bed leveling.

I first do corner leveling, test print, repeat until good.
Then I do 5x5 mesh level procedure, store the data, check with M420 V1.
Enable bed leveling from the LCD.
Start corner leveling and my corners are off (I don't touch the adjustment knobs)?
Disable bed leveling.
Enter corner leveling, my corners are level again?

With bed leveling my nozzle gets to high and all prints fail.

I've redone the the procedure multiple times, with the same results.
I check the completed mesh after every run and I get the same geometry every time.

I added the M420 S1 gcode in the slicer.

I guess I'm doing something wrong, but have no clue what.

Edited 1 time(s). Last edit at 10/03/2018 08:42AM by Brilliant name.

I find that I have to enable the Bed Leveling in the Slicer like so M420 S1 ; Bed Leveling on.

these are the last 3 line in my slicers startup G-Code.
G92 E0 ;reset extruder length
M420 S1 ; Bed Leveling On
M220 S32.000000

If I do not enable the Bed leveling data I also crash into the Bed on occasions.

Edited 1 time(s). Last edit at 10/02/2018 03:11PM by Roberts_Clif.

---

Computer Programmer / Electronics Technician

Quote
Roberts_Clif
I find that I have to enable the Bed Leveling in the Slicer like so M420 S1 ; Bed Leveling on.

these are the last 3 line in my slicers startup G-Code.
G92 E0 ;reset extruder length
M420 S1 ; Bed Leveling On
M220 S32.000000

If I do not enable the Bed leveling data I also crash into the Bed on occasions.

Yes, I have. I forgot to write it in the OP.