start filament rejection

Hello,


I recently change the marlin firmware with an new version of marlin.
Now i have a problem on start, often, (3/4) the filament is rejected on start print.
he make the autoleveling probing.
When he is on place fror start print, he reject the filament and start to print without this.

And sometimes he start normaly

here is my gcode file:


M190 S70.000000
M109 S220.000000
G28 X0 Y0
G29

;Layer count: 148
;LAYER:0
M107
G0 F6000 X33.489 Y34.776 Z0.300
G0 X33.262 Y35.004
;TYPEKIRT
G1 F1200 X33.489 Y34.776 E0.01605
G1 X34.724 Y33.678 E0.09850
G1 X36.109 Y32.573 E0.18689
G1 X36.362 Y32.374 E0.20295
G1 X37.728 Y31.433 E0.28571