i stopped the oil leak it easy job but after removing the valve cover i found a broken rocker arm. its an intake rocker arm the bike still runs fine surprisingly but why are these arms so weak?? i do have some rusted valve springs maybe thats causing more strain on the rock arms who knows. it was a used valve cover maybe it was at the point where it was ready to fall apart. any ideas or places where i can get a replacement rocker arm you know of??