A customer of ours was having trouble with the A-B centerline parallel to C. An engineer has proposed a revision to the print that removed a parallel FCF and added the two positional Control Frames. The way it is written, the two holes A and B are to have perfect form at MMC to the centerline they create. This seems to be a loop, and it seems as though the position would always be perfect, yet do nothing to control the parallel. Am I reading this correctly?

Keith Walter

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