[encantotom]

in closer look, mine has 12 of these things on it.  however, the one that broke is one of two they used as a stop at the front.  that is why my genny does a dance when it comes out.  it goes farther on one side than the other.  

i called IKO who makes mine and got the part number for the same roller cam only with a hex head to make it easier to install.  it is a CR22VB

found them on ebay for 36 bucks for two of them shipped

tom