We highly recommend that you always do the printer setup prior to printing live checks. From the 'checks' tab you will see the option to do the printer setup at the top right of the screen. From there you will want to follow the prompts. Make 8-10 copies of a check (do not use a live check) and then click 'Get Started'. You will see 4 tray configuration options. Once you determine the proper tray configuration, that will become your default option. Note that you may still need to adjust the alignment up/down, left/right. By pressing the 'continue' option, this will take you to the alignment option to ensure your checks print properly.