Agree with the above post. Bring EVERYTHING! I obtained my builder/repairman certificate at the Birmingham, AL FSDO. I even took all of my flying paperwork/medical/PPL/aircraft registration.... Anything regarding that airplane and the build went inside with me. They did look at my builders log and my photo album pretty extensivily asking me a few question about how I did this or that. They were satisfied and gave me what I needed.