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Great write up!  I appreciate the kind words. 

Adept Ape might be right!  I did a quick image search for C12 pushrods and to my amazement…I see where that *could* be the end of a pushrod.

Why not take some calipers and measure the diameter?  Also order a single pushrod and see if it is the same. 

Bill

Great idea except that I left the piece sitting on Jake's bench as I forgot it and also I think because at that point in the process it felt as if we'd solved the question...lesson learned to always take your bits and pieces away with you.  Guess we'll see how well he cleans up as it might still be there.  Wasn't able to connect with him yesterday.  I'm fine either way pulling the valve covers and rocker cover to take a look while we freshen up the Jake, etc.  Then at least the side I look at when I open that bay door will be cleaner on the engine.  Didn't see the need to do it purely for aesthetics as I'm not quite that anal for the labor it will take to replace those gaskets but if we can do it for another reason it will feel much more reasonable.