Where are y'all getting rocker arm adjuster screws? 
I was looking at mine before installation, and the shafts and rockers look good but most of the adjusting screws have worn balls.
I think I recall someone once saying that FE adjuster screws will work. The ones I currently have are the type with the lock nut. I'd rather just replace the screws if possible than shell out the $$ for whole new rocker shaft assemblies.