# MatterController Stepper Stutter **URL:** \ **Category:** Software\ **Created:** [September 13, 2014, 7:15pm UTC](https://forum.lulzbot.com/t/mattercontroller-stepper-stutter/835 "2014-09-13T19:15:22Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Nilfheim](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/nilfheim/32/33_2.png) [@Nilfheim](https://forum.lulzbot.com/u/Nilfheim)\ **Post date:** [September 13, 2014, 7:15pm UTC](https://forum.lulzbot.com/t/mattercontroller-stepper-stutter/835/1 "2014-09-13T19:15:22Z")
Hi, I just finished puttin’ my lovely KitTAZ together after to fun, and informative days of constructin’ it; But, im havin’ some interesting problems, the printer steppers all work fine up until I start a print(im usin’ MatterControl1.1). Once i start a print the Y axis begins to stutter and jerk causin’ my print to fail because the Y axis isn’t movin’ as much as it should be. Its really bad to it move the extruder to the “center of the bed” but the Y axis only moves 15~mm at most so the print is half off the bed(not that its actually print off the bed just not printin’ half of the object at all). I am not 100% sure this is a software problem switchin’ the X and Y stepper wires on the Control board the y access is still jerky(after attemptin’ to print then cancelin’ the print the Y axis remains jerky this is when i swapped the stepper signals and found the Y motor still stuttering even with the X input but i don’t know why this is only happening once i start the print, it operates fine before i start any printin’. So any ideas? what am i doin’ wrong? Thanks, Niflheim ---
**Author:** ![zero](https://avatars.discourse-cdn.com/v4/letter/z/a88e57/32.png) [@zero](https://forum.lulzbot.com/u/zero)\ **Post date:** [September 16, 2014, 1:04am UTC](https://forum.lulzbot.com/t/mattercontroller-stepper-stutter/835/2 "2014-09-16T01:04:53Z")
With the printer powered off, is it easy to move the y carriage back an forth easily on the rails, or does it require a bit of force? If it seems like it’s not sliding as smoothly as it should, you might check your y-pulley to make sure that it is not rubbing on the face of the stepper motor. You might something like this [https://forum.lulzbot.com/t/misaligned-layers/805/1](https://forum.lulzbot.com/t/misaligned-layers/805/1) or like this [https://forum.lulzbot.com/t/taz-3-y-axis-skipping-steps/528/5](https://forum.lulzbot.com/t/taz-3-y-axis-skipping-steps/528/5) . ---
**Author:** ![Nilfheim](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/nilfheim/32/33_2.png) [@Nilfheim](https://forum.lulzbot.com/u/Nilfheim)\ **Post date:** [September 16, 2014, 2:46am UTC](https://forum.lulzbot.com/t/mattercontroller-stepper-stutter/835/3 "2014-09-16T02:46:56Z")
😲 awesome that was it the set screws were not tight enough but i do have a second problem with my Z axis steppers gettin out of sync the left one seems to creeping down and then throw off my leveling any advice on that problem 😃 thanks a bunch for the first post ---
**Author:** ![Orias](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/orias/32/3_2.png) [@Orias](https://forum.lulzbot.com/u/Orias)\ **Post date:** [September 16, 2014, 3:21pm UTC](https://forum.lulzbot.com/t/mattercontroller-stepper-stutter/835/4 "2014-09-16T15:21:53Z")
Try this version of the TAZ 4/ KITTAZ firmware: [http://devel.lulzbot.com/TAZ/Holly/software/2014Q3\_rB/Marlin/Marlin-2014Q3\_rB.tar](http://devel.lulzbot.com/TAZ/Holly/software/2014Q3_rB/Marlin/Marlin-2014Q3_rB.tar) Instructions on updating the firmware can be found here: [https://ohai-kit.alephobjects.com/workflow/kittaz-firmware/](https://ohai-kit.alephobjects.com/workflow/kittaz-firmware/) make sure to update the esteps (extruder steps per unit) in the firmware prior to flashing. If you have any questions please contact us at [Support@LulzBot.com](mailto:Support@LulzBot.com).