I have no idea who rebuilt my engine - many years ago - but I'm now a little worried there might be other misassembled parts.
My truck has been worked on by guys that have a pipe wrench, a BFH, that “git-er-dun” attitude and have the nerve to call themself’s mechanic’s.
Here is a
LINK for the Rocker Arm Assembly in the 48-51 Chevy Truck Manual. This should help.