# ENDER 4.2.7 firmware, bed traming not working properly, caused by the probe offset
**URL:** https://marlin.crc.id.au/forum/t/ender-4-2-7-firmware-bed-traming-not-working-properly-caused-by-the-probe-offset/553
**Category:** Bug Reports
**Tags:** ender-3-v2
**Created:** [12 January 2022 13:59 UTC](https://marlin.crc.id.au/forum/t/ender-4-2-7-firmware-bed-traming-not-working-properly-caused-by-the-probe-offset/553 "2022-01-12T13:59:46Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Steven\_Seo](https://marlin.crc.id.au/forum/u/Steven_Seo)
#### Post date: [12 January 2022 13:59 UTC](https://marlin.crc.id.au/forum/t/ender-4-2-7-firmware-bed-traming-not-working-properly-caused-by-the-probe-offset/553/1 "2022-01-12T13:59:46Z")
Ender3-v2-v427-BLTouch-20220111.bin
bed traming, ‘front right’ and ‘back right’ is not working. no response unlikely others center, front left and back left.
it seems happened due to the probe offset of X-axis. if I put this value more than -20, bed tramming is working without any issue, however, cannot leveling front left / back left because no offset provided for the BLTouch.
can you correct this issue, please?
thank you.
Steven
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### Author:  [@CRCinAU](https://marlin.crc.id.au/forum/u/CRCinAU)
#### Post date: [12 January 2022 14:30 UTC](https://marlin.crc.id.au/forum/t/ender-4-2-7-firmware-bed-traming-not-working-properly-caused-by-the-probe-offset/553/2 "2022-01-12T14:30:56Z")
Correct - there is currently no way to adjust this as per the X / Y offset for the probe.
I recommend you store your probe offset, set them to zero, use those functions, then restore your probe offset.
Anything else will give you incorrect results.
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### Author:  [@objecttothis](https://marlin.crc.id.au/forum/u/objecttothis)
#### Post date: [18 March 2024 10:04 UTC](https://marlin.crc.id.au/forum/t/ender-4-2-7-firmware-bed-traming-not-working-properly-caused-by-the-probe-offset/553/3 "2024-03-18T10:04:35Z")
I’m experiencing this exact issue with an Ender-3, MicroSwiss DD and Creality 4.2.7 board. Can you help me understand better?
In Firmware Builder my X\_MIN\_POS is -5 (needed for the MicroSwiss DD or it prints off board). My probe offsets in EEPROM are X (-77), Y (-25) and these are needed to get my CR Touch probing centered.
I think I understand @Steven_Seo needed to set the X probe offset to \> -20 in order for Automatic tramming to probe Front-Right or Back-Right.
- I don’t understand why this doesn’t work with my probe offsets given that G29 probes the exact correct coordinates.
- Is this a problem in the Configuration.h/Configration\_adv.h that your firmware builder is creating or is this a Marlin Firmware issue?
- You wrote “there is currently no way to adjust this as per the X / Y offset for the probe.” I’m not 100% clear on what this means. Do you mean that Automatic Tramming Wizard uses the X offset value which makes it think that Front Right and Back Right are off the build plate therefore won’t probe? Or do you mean something else?