Hi Keith,
Thank you for your message!
Have you tried writing a BCheck for this? BChecks allow you to script tests tailored specifically to your needs, enhancing the scanner's capability to detect vulnerabilities that are most relevant to your applications. You can use a simple scripting language to define these checks, which are saved as .bcheck files and can be imported into Burp Suite. This approach enables a more agile security testing process, as you don't have to wait for new checks to be integrated into the platform natively. You can quickly create a BCheck for emerging threats, like zero-day vulnerabilities, and integrate them into your testing routine immediately.
https://portswigger.net/burp/documentation/scanner/bchecksI hope that helps.