Any one interested in the oiling mods I did?

Phreakish said
Which is exactly why someone wouldn't just give away all their secrets, LOL.

Velocity can only affect flow when pressure is gone. Bleeding off more pressure wouldn't fix the inability to turn at that point and in fact make it worse - this is why I can't buy the velocity explanation.

I could see the crossover boosting volume (and thus increasing local pressure) at the #1 main, which could help prevent loss of pressure in the passenger galley to some extent by effectively "double feeding" the passenger galley, or at least a portion of it. Would work even better if it's easier to drill the backside of the passenger galley larger to help offset the outflow through the crossover.

I have you at a disadvantage because I have the Atherton book, but the Atherton crossover method also wants you to plug the end of the passenger galley. Number 1 main is fed from the drivers side.
Having said that, you can start to see that the Chrysler method and the Atherton method have the passenger galley capped because it slows the velocity. Both methods are similar to the sketch that Gregcon posted. The crossover goes further by channeling some of the excess flow over to the drivers side and also Feeds the lifters.