I recently bought some Comp Ultra Pro Magnum shaft rockers for our 360. I was very impressed. However, these have two bushings in each rocker, with a void in the center. After we installed them, the bushings walked and butted up against each other, blocking the oil hole. Fortunately, we caught it before there was a major problem. Comp is currently working with us on the issue. My question is, has anyone experienced a problem such as this?...... Bob P.