I have a question for Mark related to publishing my book

Given the large number of self-publishing queries that Mark and the SPF team receive on a daily basis, we'd advise you to ask your question inside our free-to-join Facebook Community group, a valuable resource for indie authors in its own right:

https://www.facebook.com/groups/SPFsecretgroup/

You can search existing posts for an answer to your query or feel free to post your question into the group - don't be shy! You're likely to get a quick and informed answer from fellow authors that inhabit the group.