Trimmed the centerline seam for the RH skin. Skin currently fits well with zero gap all along. Started to drill the skin in by drilling all centerline holes. Have not yet decided how I will get inside to drill through the bulkheads. Also, for those looking at this as an example, when you drill your center seam, don't forget to mark the holes that will go through the bulkhead flanges and be sure you drill from the inside out, not the other way around.