AP Check Printing Adjustments
Make sure when printing to select none for page scaling (or similar scaling setting) and uncheck the auto-rotate and center (or similar auto-adjustment setting). These appear in the printer options when printing the PDF.
If you need to add horizontal or vertical adjustments so that printouts better match up on preprinted checks, go to Admin -> Ledger -> Bank Accounts and select an account to edit. Under the Checks -> Additional section enter in values for Horizontal and/or Vertical under Check Adjustments. Enter whole numbers. Each number is 1/72 of an inch (0.0352 cm).