@Funola ?

What does the wanted to see RIV thangy spot one looks for..... look like, when peering in the RIV port? Using a Borescope have come to a spot where the drum thangy that rotated along with the shaft thru the IP as I rotated the engine. It is an open slot across Drum?? t Was under impression it would be a gear tooth across that drum as rotated engine.

Is this slotted opening in the drum the Thangy I twas to be looking for?

I'll try to get a pic of similar off my ratted out engine. My Borescop does not have a memory card in its slot so will have to use my phone.

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