# Sidekick 747 printhead wobble **URL:** \ **Category:** General\ **Created:** [September 9, 2023, 7:26pm UTC](https://forum.lulzbot.com/t/sidekick-747-printhead-wobble/25997 "2023-09-09T19:26:25Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![wesmatch](https://avatars.discourse-cdn.com/v4/letter/w/d07c76/32.png) [@wesmatch](https://forum.lulzbot.com/u/wesmatch)\ **Post date:** [September 9, 2023, 7:26pm UTC](https://forum.lulzbot.com/t/sidekick-747-printhead-wobble/25997/1 "2023-09-09T19:26:25Z")
I’ve been using the Sidekick 747 for a few months and the prints are great. However, last week I noticed that on the initial layer the hotend is lightly dragging, which is causing print failure. With the z axis raised there is a vertical wobble. This is not side to tside but up and down. The gantry wheels are a little loose. I have looked for instructions on how to adjust them but I can’t find any. Ideas on what the problem really is or how to adjust the wheels would be very helpful Thanks. ---
**Author:** ![Wrathernaut](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/wrathernaut/32/13542_2.png) [@Wrathernaut](https://forum.lulzbot.com/u/Wrathernaut)\ **Post date:** [September 12, 2023, 1:46pm UTC](https://forum.lulzbot.com/t/sidekick-747-printhead-wobble/25997/2 "2023-09-12T13:46:47Z")
Assembly for the gantry can be found here: [OHAI: Open Hardware Assembly Instructions (lulzbot.com)](https://ohai.lulzbot.com/project/x-carriage-sub-assembly/taz-sidekick-747/) I’d check that everything looks right according to those instructions, but it sounds like you may have a wheel with a flat spot from being too tight and/or not being moved enough. Flat spots can be worked out by just moving the wheel enough back and forth to let it even back out, or you can buy a new wheel and install according to the linked instructions. ---
**Author:** ![pug](https://avatars.discourse-cdn.com/v4/letter/p/51bf81/32.png) [@pug](https://forum.lulzbot.com/u/pug)\ **Post date:** [December 8, 2025, 7:43pm UTC](https://forum.lulzbot.com/t/sidekick-747-printhead-wobble/25997/3 "2025-12-08T19:43:19Z")
Been lurking for a couple years as our school has one of these and I am the one that updates software/firmware when needed and tweaks hardware. Picked up a used Sidekick a couple of weeks ago for myself and in the process of rebuilding it. I know this is an old thread but for those who may have the same question I will tell you what I found. The toolhead mount is not super precision in that it and the bolts/rollers it uses are not a tight precision fit. If your printer has a lot of prints on it you should probably change the V rollers out and/or loosen all bolts for V roller then squeeze top/bottom pair of rollers towards each other while tightening their respective bolts. This will ensure a tight fit as possible and should eliminate most wobble. I built a toolhead using a E3D Hemera | 0.4mm nozzle and just got it all going last night. It is in there now printing a 4 hour christmas tree ornament job and looking good 🙂