Quickbooks Desktop Pro 2018

Use Align in Printer Set up to adjust the print alignment to print checks in the middle position:

Go to: File/PrinterSetUp/Check-Paycheck/Align
Suggest changing Vertical Align value to something like -330 Vertical.
Use the Print Sample button to print a test. (I printed on copies of checks to avoid waste)
That should push the imprint image down to the middle check position.
If you need to adjust horizontally, you can do that too.