Sorry for the late reply, I somehow overlooked your comment.

Best place to get feedback on that problem is either via the me_cleaner website. If it's not addressed in one of the issues, it might end up needing you to open a github issue for it. For a lot of the problems I ran into I got a lot of help on the coreboot irc, you can reach it by clicking on the diagonal banner in the top right corner when you go to https://www.coreboot.org.