BTW, Jake, the leaks out of the rocker shafts can come from any bolt....the whole interior of the shafts will fill with oil to some degree if the engine pressure is on the high side (despite the 'oil pressure interrupter' in the cam design), and pressure can build up inside them if the flow out of the shaft to the rockers is slow. All bolts in the shaft can see the same pressure, so they can leak on any one. The adjustable rockers will be the most prone to do this by their design; they fit pretty snugly on the shaft.
BTW, we recently primed our new 340 with PRW rockers, and the oil flow out of the shafts was just a slow flow or dribble at each point between the rockers, with 67 psi showing on the test gauge and 10W30. And that is with the cam lined up and no interruption of pressure. (However, the PRW shaft restricts the oil into the shaft interiro more than the stock shafts.)
As for 340dartley's comment, I have to ask what weight oil he is running. If it is at 80 a lot, then his oil may be on the heavy side. I have to wonder what the pressure relief valve is doing.....or not.
But, I was almost thinking of telling Jake a similar thing: that maybe the best thing to do after good top end checks is run it carefully for a while and keep and eye on it, stay with the lighter weight oils (which promotes better overall flow rates and cooling anyway), if the top end leaks can be satisfactorily managed. It is not quite at the level where I have blown out filter base gaksets; that was at 100psi). Pulling the motor would be a lot of work, thought pulling the pan might not be as bad, depending on your tooling.