Our rockers are all CNC'd. They are made in the USA. They do not use bushing or needle Bearings. We banana groove the shafts so you get full oil pressure all across the surface of the rocker.
Years ago we sold some rockers made by Dove. They were extrude honed. If Dizuster had one of those and they broke we would have replaced it with one of those or referred him to Dove. The new ones are all CNC'd. For super high spring pressures we suggest having us get them Cryo treated.
Kevin@ Hughes