Riveted rudder stops. Routed electrical conduit to final locations, drilled and installed bushings for it. Research showed that some oil canning has been happening on the aft bottom skin in between bulkheads 808 and 809. Fabricated a stiffener with riveted angle to it for placement on the inside to prevent this oil canning. Installed stiffener by riveting the front to bulkhead 808 and bonding the entire angle with fuel tank sealant to bottom skin and bulkhead 809. This should stiffen it up enough to prevent the problem
