Leave it. Magnums are engineered with that design, and changing it could cause tuning problems. My magnum runs great--until, that is, I beat it up one fine day (landings are better with the wheels down!)

Don't worry, though, as soon as global gets valve covers in, mine will ride again. Good, strong engine. You will like it. It's a steal for the price!

Leave it as is. What most people on here are saying is don't make your engine recycle crankcase exhaust if it wasn't designed to in the first place.