I am building a 402 and I am stuck with the crank gear. I am using the roller set that came with it from TSP. My crank is grooved and my crank gear is grooved, but is there a little piece of metal that holds the two together? The roller set doesn't have this piece and the stock gm crank gear doesn't have it either.

 

Anything would help me out. Anyone have an idea?

 

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