KMJ Performance Rockers???

The biggest problem with those rockers are the roller tip "pin" coming out, i've been told to stay away from the ones that have the pin pressed in from 1 side & have teeth, get the ones that are pressed on both sides, All these rockers like these are what they are, from overseas, whether there stamped this or that, boxed this or that, some have better quality control then the others, but i've heard there not bad for the price (the stainless that is). I'm getting a set for my 406 sbc.