I would like to pick your collective brains here!
Most of the unknown parts are gaskets, or in this case an "O" ring.
Three O rings in the gasket kit; lg., med., and small. Where does the small one go?
Large

Med.

and small.

Part that bolts into block that holds oil filter (dim)

More to come! There are about 6 gaskets that I can't identify.
Thanks!
J.B.