Looking for suggestions about how to do this because I have just ruined ANOTHER rocker bearing and rocker arm. I placed the bearing in a 1 and 1/4 in socket, pin hole vertical. The bearing is supported at four points by rim of the socket. I chilled the pin in the freezer, heated the rocker arm in boiling water, lubed with oil, and placed a flat plate on the protruding pin that had been inserted into the bearing hole and seemingly in the mildly chamfered hole of the rocker arm. I used a hydraulic press. Regardless, the pin scuffed metal out of the rocker arm hole and pushed it into the rocker arm hole, ruining the rocker arm and one side of the bearing. I don't recall such difficulty before and being the paranoid type wonder if the rocker arm holes are machined properly. Thoughts and prayers will be appreciated. Thanks, Charles Cannon