On my max 4 the x axis is cutting a few mm too much to not make a perfect circle. I’m using an extended bed 750 x 1030 Ive check3d tge wheel alignment, belt tension, cleaned and did everything i can think of
A picture of the problem would help.
Make sure the Enable Rotary switch is turned off:
Enable Rotary
It’s right below the Home button and remarkably easy to click inadvertently:
Home
The Troubleshooting tips may provide other things to check:
Have you calibrated the axes?
I think OP said they fixed it in another post.