I should mention that I am running Harlan Sharp rockers. Maybe bushed or stamped rockers would be affected differently. I will also be restricting the rockers a little.
Both HS and Crower techs thought it was good to run both.
I don't think you want to restrict the oil on needle bearing rockers,
You actually need more oil, a bushed rocker has a lot of surface area on the shaft, a needle bearing has very little compared to the bushing, I think you should talk to Harland Sharp about it.
