Now attach the throttle control bracket, using some anti-seize and two lock washers, but leave the bolts loose. Insert one “C” shaped shim (A-6400), about .010’’ thick under each ear, over the shaft of the bolt, and tighten securely. I have never found any authoritative Ford references on these shims, except at page 218 of the Service Bulletins, but word of mouth has it that they are to compensate for the paper gasket on the lower segment. This makes sense, because for reasons of production economy, the plane of the ears and the forward surface of the housing were undoubtedly machined parallel.
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