We had to redo everything but middle longeron strengtheners.....Needed to match drill the BOTTOM Longerons FIRST. Nothing lined up that we had previously match drilled. We needed to scrap all of the side skin strengtheners as they were the wrong length. The biggest problem is that before we figured out that the skins were out of alignment we had match drilled the lower right S3 to S4 support for the floor of the baggage area. We drilled the holes too close to the edge, which meant we needed to order a new part. This stopped all work on the fuselage until that part arrives in time for our next visit. We were able to find identical material for the bottom and side strengtheners that were to be used later in the build...I ordered replacements for this as well. We were able to match drill the lower left longerons and the S3-S4 support.