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I have a problem with my Ender 3 printer with BLTouch v3.1. Firmware from this site.

After assembly, firmware upload, Z-Offset setting, initial leveling of the table, the sensor works, but I can never get the correction right before printing.

I decided to check what is wrong from terminal with command G29:

Bilinear Leveling Grid:

0 1 2 3 4
0 +15.871 +19.925 +23.954 +27.770 +32.144
1 +53.257 +49.030 +44.974 +41.078 +36.189
2 +57.558 +61.714 +66.751 +71.334 +77.399
3 +99.864 +96.713 +92.582 +88.645 +83.274
4 +104.468 +110.443 +115.017 +120.981 +127.334

I rubbed my eyes in surprise Once again...

Bilinear Leveling Grid:

0 1 2 3 4
0 +145.404 +152.190 +157.641 +164.253 +170.759
1 +200.056 +193.114 +186.965 +182.234 +177.173
2 +207.177 +214.175 +221.027 +227.669 +234.089
3 +254.290 +249.875 +245.733 +242.462 +240.638
4 +258.747 +263.084 +267.183 +271.125 +274.009

Has anyone had a similar problem/output?

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