That's funny. Hughes rebuilt my best friend's 440. It's had a rear main leak since then, which quickly ruined the dual-disc clutch they swore he'd need for an all-iron-manifold engine. He got it down to just a very slight weep but it still spots the garage floor, which drives him nuts. It never leaked a drop before being rebuilt. I'm going to mention the Fast Fish part to him, though, along with possibly having the cap ground a bit. Hopefully one, the other, or both will finally put a stop to it.