A quantity of the distributor cam shafts A-12178 were shipped less the .128/.132 drilled pin hole.
Please check your stock and if you have any of these shafts that do not have this .128/.132 hole drilled in the shaft, return them to your branch for drilling. (See Fig. 957.)
We prefer to have the Branch perform this drilling operation as the dimension from the center of the pin hole to the shoulder on the shaft is very important.