# One side of Y-axis offset during carve
**URL:** https://forum.onefinitycnc.com/t/one-side-of-y-axis-offset-during-carve/32426
**Category:** Troubleshooting (Elite Series)
**Created:** [April 12, 2025, 9:50pm UTC](https://forum.onefinitycnc.com/t/one-side-of-y-axis-offset-during-carve/32426 "2025-04-12T21:50:01Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@daniel.centore](https://forum.onefinitycnc.com/u/daniel.centore)
#### Post date: [April 12, 2025, 9:50pm UTC](https://forum.onefinitycnc.com/t/one-side-of-y-axis-offset-during-carve/32426/1 "2025-04-12T21:50:01Z")
I am having an issue where – after a long carve – the right side of the Y axis ends up somewhat shifted compared to where it started.
When I travel to Y=0, the left side is consistently ~2mm from the edge. This is immediately after homing and after a long carve.
After homing, the right side is also ~2mm from the edge. However, after long carves (several hours), I find it offset. I went to Y=0 at the end of a carve and found it \<1mm from the edge:
I re-homed, ran the same exact carve again, went to Y=0, and found it nearly 5mm from the edge:
What is the most likely cause of this? Since this is an Elite, I assume skipped steps aren’t a possible cause because it’s closed loop?
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### Author:  [@HardtailSr](https://forum.onefinitycnc.com/u/HardtailSr)
#### Post date: [April 13, 2025, 12:55pm UTC](https://forum.onefinitycnc.com/t/one-side-of-y-axis-offset-during-carve/32426/2 "2025-04-13T12:55:16Z")
It looks like chips stuck in your bearing from the pictures you sent. remove them and try again see what happens
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### Author:  [@daniel.centore](https://forum.onefinitycnc.com/u/daniel.centore)
#### Post date: [April 13, 2025, 3:12pm UTC](https://forum.onefinitycnc.com/t/one-side-of-y-axis-offset-during-carve/32426/3 "2025-04-13T15:12:52Z")
I’m not understanding how a few chips would cause this? Even if it got stuck, shouldn’t the closed loop either compensate for it or trigger an alarm? It moves very smoothly, I don’t get any jerkiness. It just accumulates some during the carve and I clean it off before the next carve.
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### Author:  [@BuckeyeDennis](https://forum.onefinitycnc.com/u/BuckeyeDennis)
#### Post date: [April 14, 2025, 10:52am UTC](https://forum.onefinitycnc.com/t/one-side-of-y-axis-offset-during-carve/32426/4 "2025-04-14T10:52:44Z")
I’d check the motor coupler on the offending y-rail. When I was calibrating my Elite Journeyman after upgrading it, I discovered that a Y-rail coupler was loose on the pre-installed side. Following that discovery, I went through and checked both sides of the couplers on ALL axes.
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### Author:  [@daniel.centore](https://forum.onefinitycnc.com/u/daniel.centore)
#### Post date: [April 15, 2025, 2:04am UTC](https://forum.onefinitycnc.com/t/one-side-of-y-axis-offset-during-carve/32426/5 "2025-04-15T02:04:56Z")
I think that may have been it! Definitely had a few loose screws on the couplers