# Weird issue, Need Help
**URL:** https://forum.avidcnc.com/t/weird-issue-need-help/3078
**Category:** General Chat
**Created:** [March 20, 2024, 10:59pm UTC](https://forum.avidcnc.com/t/weird-issue-need-help/3078 "2024-03-20T22:59:50Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@russellbbd](https://forum.avidcnc.com/u/russellbbd)
#### Post date: [March 20, 2024, 10:59pm UTC](https://forum.avidcnc.com/t/weird-issue-need-help/3078/1 "2024-03-20T22:59:50Z")
Having a strange issue, i’ve run out of ideas. Help Appreciated 🙂
So, we use our 4896pro to do all kinds of stuff, but mostly it cuts parts for cabinets (we own a custom cabinetry business). We use a cabinet design program called Mozaik to generate the g-code. So here’s the issue, when i run mozaik produced g-code, any part that requires hold down tabs is cut 1/4 smaller than required. When the machine cuts the tabs, it cuts them as though the part was made the correct length. It leaves an 1/8" tab on each end that, when measured, is the correct part length. All parts not requiring tabs, it cuts perfectly, and the machine cuts perfectly when using g-code produced by vectric.
So i take pictures and e-mail Mozaik support. Send them the project file as well as the g-code in question. While waiting to hear back i mull over the problem. It cant be that the machine is bogging down and losing it’s y axis reference, because it cuts them equally on both ends (not offset). To make double sure, i re-indexed the machine between the part cut and the tab cut and it still, same issue. I thought maybe mozaik thinks i have a different collet/spindle size than i do?
Well, Mozaik support emailed me back and said that they simulated my g-code and it worked perfectly, so its not their problem. I cant see how it isnt. I uploaded a picture to this post, hopefully it shows.
So i’m reaching out here, because i’m out of ideas. I cant get any info out of Mozaik support since it simulates fine, but obviously there is an issue. Does anyone have any advice? Or a place to look? I swear i’ll dance at your next wedding if you help me figure this out.
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### Author:  [@Calum](https://forum.avidcnc.com/u/Calum)
#### Post date: [March 21, 2024, 4:04am UTC](https://forum.avidcnc.com/t/weird-issue-need-help/3078/2 "2024-03-21T04:04:00Z")
I’m unsure what you are getting at but when I want tabs on any parts the tool does not cut all the way through the material in the z axis and leaves a tab between the part and the rest of the material. From your picture it looks as though the tab is being left in the y axis for some reason, maybe the softwear is setup or configured incorrectly.
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### Author:  [@Stephen](https://forum.avidcnc.com/u/Stephen)
#### Post date: [March 21, 2024, 1:17pm UTC](https://forum.avidcnc.com/t/weird-issue-need-help/3078/3 "2024-03-21T13:17:59Z")
That’s puzzling. Apart from the tabs being different, this sounds like it could be an issue with cutter compensation. Does your code have any G41 or G42? Are there any non-zero diameter or diameter wear offsets in your tool table?
Feel free to attach your G-code file here if you want us to take a look. I think you can use the upload button when composing a post. Or drop a link to a file-sharing site.
Welcome to the forum.