Bed mesh

Hello I am a newbe in rat os previously I used stock klipper after homing and making z-till my mesh looks like this but on klipper it was perfect (range 0.098mm) I use beacon to probe. Moreover I have mesh min 50;50 and max 300;300 (printer size is 350mm) I saw that gantry in x moves from 50 but it ends on 350 even I set max 300