Small Block Oiling Mods - Are They Beneficial?

I try not to increase top end oiling, but I do make damn sure what's there is working 100%. Many cam bearings do not align perfectly with the holes in the block. So I taper the backside of the #2 and #4 cam bearings so there is less of an interruption where the oil passage would intersect with the bearing hole. I suppose this also means the holes are expoased a little bit more. I know I have never had an issue with rockers being starved. The trick is really to get "just enough" oil up top, because the lower end REALLY needs it. That's why they get restricted. When things are working, there's already more than you need for most builds.