Thanks for reaching out and sharing the details of your printing issue with the red hash marks over the numerical amounts on your checks. It's great to hear from someone who used QuickBooks for several years!
I'm glad to hear that you've figured it out. Your troubleshooting skills came through and resolved the issue!
You might also find this article helpful for additional printing troubleshooting tips in QuickBooks Desktop for Mac: Troubleshoot printing.
Please don't hesitate to get in touch if you encounter any other printing issues or have more questions. I'm here to assist you anytime you need help. Keep safe!