Fully home. If fit properly, it must be driven with a hammer the last 1/4 inch or so, using the flat blade of a small slotted screw driver as a punch. You must provide yourself a means for retrieval before doing this (see the small green wires). Otherwise you will never get it back out. If you were to commit to driving it all the way without means for retrieval, then find out it wouldn't quite go below flush for some reason, you'd be in a mess. But the wires can be used to provide traction and it can be rocked out. By the way, the shiny appearance of the inletting is not oil in the wood, but rather the hardened surface that results from being soaked in CA glue after thorough degreasing:
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