I’m just in the process of tramming mine. I put a level on the table and attached my z probe to the level and the rail. I then probe the z without an offset so it stops right on the level. Then I use a feeler gauge to check the front and make rails to make sure they both touch and there are no gaps. To adjust the gaps you can adjust the four bolts that hold the z tubes to the x tubes. Tightening the top and loosening the bottom causes the rail to move down to the table. Now that I know my rails are true I’m moving onto the router itself
