No dice on plunging or Draino. The clog isnt in the U, so it’s down deep… Next step: Simple green degreaser. I’ll let you guys know how it goes. As a backup I have a bottle of degreaser with warnings on it like “Fatal if swallowed” and “will cause serious burns to skin”. I like environment friendly
solutions, but, I like an unclogged drain more.
More in a couple hours.

DK