Best posts made by MrNiceguy

I had this problem as well, i'm not really sure how I fixed it but I know it had something to do with the drive settings in your firmware.

This is my config:

; Drives
M569 P0 S1                                 	; Drive 0 goes forwards
M569 P1 S1                                 	; Drive 1 goes forwards
M569 P2 S0                                 	; Drive 2 goes backwards
M569 P3 S1                                 	; Drive 3 goes forwards
M350 X16 Y16 Z16 E16 I1                    	; Configure microstepping with interpolation
M92 X100 Y100 Z1600 E95                		; Set steps per mm 
M566 X1200 Y1200 Z4.5 E300                 	; Set maximum instantaneous speed changes (mm/min)
M203 X24000 Y24000 Z120 E3000              	; Set maximum speeds (mm/min)
M201 X1000 Y1000 Z100 E5000               	; Set accelerations (mm/s^2)
M204 P400 T400                            	; Lower accelerations when printing though
M906 X750 Y750 Z750 E750                   	; Set motor currents (mA)
M84 S0                                     	; Disable motor idle current reduction

I am having some struggles with under extrusion on my Anet A8 so I wouldn't copy the E values.
I also changed my leadscrews to some with a lower leadscrew pitch, so the steps per mm for the standard rods should be 400.

Glad I could help