I know what you mean about those rockers looking extremely inadequate, the design seems so cheap and rushed. I remember when i bought my first 6.4, i was reading the forums about common problems and a few threads about the rockers came up. I hadn't seen what a 6.4 rocker looked like yet, and one guy posted a picture of a rocker with a broken-off tip. I remember looking at the picture thinking " ok thats a picture of some kind of little plate that must hold the rocker arm in, but where's the rocker arm?...oh crap, that IS the rocker!"
