Well l think it clear there was a design issue in the rockers with the needles, more than coincidence three of us had same problem, the design would have been more reliable with no needles just steel shafts, obviously the design engineers were to clever for their own good, it was not lubrication related there was a lot of oil going to rocker feed, l think it was the needles unable to take the stresses, with a simpler design there would have been no problem.