Geeetech

Hi
I am using Geeetech Dual Extruder Prusa i3 pro C kit.
Both Stepper motors (Z axis) turning little bit different speed.left side 2rounds bellow than right side.
Again if i adjust the both are same level,after some time (if machine run approximate 30 minuets) it goes to different level.I tightly screwed the Z Axis Couplers.still the jerk will come

Can you sallow my problem?

Please give me solution for this problem

hello,shiva.your z axis appears to not move smothly.you can try to adjust those screws of 2 z-axis.it seems that the z axises are getting a little stuck.