u/Agitated_Tank_420

After replacing the left joystick with a GuliKit TMR module on my Xbox Series controller, I can reach full range (0–1) at the top of its travel, but consistently fails to reach the bottom corners. The right joystick (unmodified) reaches all 4 corners correctly and passes circularity with a full square.

Is that an usual pattern? What could I look or do? What pinout on the joystick should I check and resolder?

Thanks for any hints or advices