Hi all. I am hoping someone can give me some good advice about new rocker arms to  suit 272-292 y block. I have replaced complete valve train during the engine rebuild and now have a problem.  The ball on the end of the rocker arm adjusting screw has worn away to about half its size and I am very suspect about the rest as a couple look like they are going down the same path.  All American made (suppossedly).  The new rocker arms, shafts. etc have done about 4-5 hours, if that in the shed.  I need advice as to what brand or type to buy this time. (no chinesium) This is not a good start for a new engine so i am suitably pissed off.  Thank you in advance.  Waiting patiently.  The pushrods came from FA products and are okay unless you know different the rockers came from another supplier.  
  

  

yes all assembled correctly and lots of clean oil