Managed to test fit the new rib into the left wing. The forward flange tabs will need to be adjusted a bit, but the initial fit is not bad.
Before trial fitting this rib, I adjusted the tank's float sender control rod. It had been binding ever so slight against an adjacent rib. Van's modified their plans to prevent this by shorting one leg of the float's control rod. The left tank's fuel sender is now ready for installation & sealant.
