Hey David,
I thought I'd jump in here, as it's our tool
We have more information on bot verification here, including a troubleshooting section with common issues for genuine events being marked as spoofed -
https://www.screamingfrog.co.uk/log-file-analyser/user-guide/configuration/#verify-bots
You can also reach us via our support here - https://www.screamingfrog.co.uk/log-file-analyser/support/
Cheers.
Dan