I finally got new mirrors for my brand new CO2 laser which I own for 2 months now and couldn't not finish a single cut with (thank you Chinese factory for not caring at all!!!).
In the process of replacing many things in the machine, I also wanted to remove the air intake adapter. In order to remove it the XY table needed to go out as well. Yesterday I tried to re-align to mirrors and after about 2 hours in I understood that it simply can not be done because when I move the table (Y) axis and point drift in one direction more than I can adjust with the screws to center it in the mirror. So my guess is that the table is not moving in a straight line in 45 degrees against the 1st mirror. Do I need to re-position the XY table?