Dear professionals, please help on this.

I am trying to write a text with my LaserMaster L20, but the text is coming up like this:



In it's linear movement it seems like the laser isn't hitting at the same place, and it is creating this double line letter, or a more wide letter than it should be.

I have no clue [COLOR=#DD3C42 !important]how to fix[/COLOR] this.
thanks and very much appreciated any thought of yours on this.

Ardita