In checking the final alignment of ribs and other details, I noticed that the wing walk ribs were not aligning spanwise in a perfect line. I hit the proper dimensions at the front and rear spar, but there were minor changes in the bend radius that bothered me. As a result, I unriveted the rib caps, remade the bent caps, and reinstalled. Also, as I get ready to do wing skinning, I bought a new pallet of aluminum. I included all metal needed for the wing skins as well as flaps, ailerons etc. The price of aluminum continues to increase. This shipment was about $1,000.