I have a F1 xtool and I have an item that is 280mm and I changed the diameter and yet, when I run the laser it seems to over-do the rotation per inch. I changed the diameter lower and lower to the  point were I reached the smallest setting and it still is doing the se thing. I changed the lines per inch, and it is still doing the same. I let it sit overnight, and yet still no change. At one point the rotary tool stopped working entirely when I finally got it working with LightBurn (used creative space before switching to LightBurn to see if it was a problem with the app or the laser) then the design suddenly shifted and the laser just started flashing before I cut it off. I tried several times after to see what went wrong, but I cant find any articles on it.