Sure looks like flat stock. So, punk iron flat stock. Is this hump we're talking about upwards or downwards? Mike's right about the support. We yank lintels all the time...just take out enough brick to get the lintel out. We pull a lot that are completely gone, nothing left. Brick above is only deformed from lintel jack, not settlement. Cosmetic lintel deterioration must be peculiar to the south. Up here, rust and delam means the lintels are going bad, and the number of stories doesn't effect anything. If one wants to live with cracks and let them go and not replace them, it just means one will live with cracks, has let them go, and has chosen to not replace them. Rust and delam continue regardless of how I feel about it. Southern iron must be different than northern iron.