Note: Recommended Computer Checks
First make sure your print Scale setting is set to Default or Fit to Paper
If still you need to do any adjustment you can modify the Word Document Template in Microsoft Word.
1- click on Company Setting
2- Click on the Templates > Checks (Voucher / Draft)
3- Download the existing Template,
4- Modify your Template in Microsoft Word and then upload it with your changes.
Microsoft Word Template Sample