Geeetech

when i print using Repetier with usb it doesnt do auto level. It probes just the middle but not the other corners. My bed is warped, its high in the middle and low on the corners so i need it for it to print good.
my Gcodes is
; Default start code
G28 ; Home extruder
G1 Z15 F{Z_TRAVEL_SPEED}
M107 ; Turn off fan
G90 ; Absolute positioning
M82 ; Extruder in absolute mode
{IF_BED}M190 S{BED}
; Activate all used extruder
{IF_EXT0}M104 T0 S{TEMP0}
{IF_EXT1}M104 T1 S{TEMP1}
G92 E0 ; Reset extruder position
; Wait for all used extruders to reach temperature
{IF_EXT0}M109 T0 S{TEMP0}
{IF_EXT1}M109 T1 S{TEMP1}

i quick google search and i added
G28
G29
M500
M501
M420 S1
M107

Now it probes all corners but still doesnt compesate for my middle warped bed.
how can i fix this ???

Hi,
If your heating bed is bent, it is best to replace it, which may affect the printing effect. If you cannot start printing, there may be a problem with gcod, you can print a test file.

Does the Mylar sticker just peel off ?
Is it a one time use only or can I peel it off and re install it ?
Want to see what’s causing this. If the Mylar is off or the whole hot bed Metal is off

Hi,Mylar tablets can be reused without gel effect.