Pressure advance tower not looking great

Basic Information:

Printer Model: Anycubic Mega X
MCU / Printerboard: original from Anycubic

Describe your issue:

Hello I am new to Klipper, I have installed it on Anycubic Mega X with Raspberry pi4 and after some tentatives I got the printer to actually respond and move the proper way.
I am trying to calibrate the printer pressure advance following the guide but I can see that printing the Tower comes out really bad: is this normal? Do I miss something in my configuration file?
The worst corner is the front right although I think is where the printer is trying to hide the seam… But the print itself is really bad…

Any suggestions where I should start troubleshooting from?

I checked all the mechanical of the printer and is good, all belts or bearings spindles are ok.

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