Rocker arms for Speedmaster LA heads

My heads were built from raw castings. Comp Magnums (not the Ultra Pro Magnums) didn't line up well, Got a kit from B3 to get it right but it moved the push rod so much I was hitting the tunnel, and even after opening them up it still was too close. Next I tried Hughes aluminum rockers, I don't recall if I needed a shim under the shafts or not but they fell in far better than the Comps Magnums. As you know results may vary with where the valve stem heights were set to.