[L79v]

After 4 frustrating years, got engine back from "engine builder" several months ago. Has new BBM aluminum heads, reusing the Dove rocker arms, and the Reed solid lifter cam that were in the car when I bought it.
Valve train is noisy (wasn't before the rebuild). Drove the car to builder, next day he says noise is from side to side movement of the rocker arms on the shaft, and valve lash is correct (I'm sure it isn't).
I do want to add shims to take up excessive side to side play of some rockers, and change position of some shims to get better alignment of rockers with valve tip. Looking for any advice on best way of doing this, any particular things
I need to be aware of, torque specs for reassembly, etc. Any and all help will be much appreciated. Thank You,
Gene