I went to check oil flow and saw this in the tank. It obviously slipped off my seat and into the open tank during one of the last half-dozen timings before I finally got it where I wanted it. We all know what this is, so let's say it together on three: One, two, three - THE WOOD WEDGE TO JAM THE ATD DURING TIMING! But, hey, I'm sure my new oil filter would have caught it.
Richard L.