Harland Sharp rocker shaft alignment

Mopar Sam said
I think @NC Engine Builder had a post on here that showed the rocker stands on the SM heads had the wrong radius for the rocker shaft diameter.

My ProComp, pre-SM heads, had 5/16 threads in the stands, but I milled the stands down for the W2 offset rocker blocks. I removed the 5/16 helicoils (That was the real pain of the job) and installed 3/8 helicoils. They were right at 1" long if I remember right. I got them from McMaster Carr.
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The pedestal casting is not very true on my cylinder heads and there is an indexing relief machined in the sides of the center pedestal to locate the thrust washer (I presume as its seems to align with the PRW 5/16 hold downs). I didn't care for the misalignment of the Harland Sharp hold downs with the 5/16 hardware and wanted a consistent thrust endplay cylinder to cylinder.