Restore a Revit file using Journal File - API Developer

I need someone who can help me to restore lost work in Revit using the journal file. I don't have the understanding of Revit API to complete this task myself. I have tried but get an error as I'm not sure what content needs to be deleted from the Journal file in order to successfully recreate the work that I have lost. The reason is not an error but rather "user error" in that I hit "no" to saving changes by accident. The journal file is about 13mb so I think we have a chance of success. I will pay hourly rate for 1 hour of work if unsuccessful and $500AUD if successful.