SINCE the front plate is the topic, I have a question too. The camshaft is held in using a thrust plate with two screws. There is a third threaded hole with an elongated screw, that ends up looking like a stud. Anybody know what this for and is it required for anything? Yes, I lost it or never had it. You can see it on page 6-22 figure 35 of the 48-51 shop manual.
