Thanks for solving! (I was worried that this was a bit too far "out there" so this is at least a bit reassuring, even though you're a highly skilled solver!)
Subdivisions of a tarot deck, in the occult tradition
7A
Metallic musical instrument with an open end
9A
Possesses, owns, or holds
10A
Rib, tease, or josh
11A
Vehicle of the Weekly World News, often
12A
Part of a journey, a race, a chair, or a pair of pants
13A
Feature of the Sahara or Gobi
16A
Mortise mates in wooden joints
17A
Pealed, phoned, or summoned
Verticales
1D
With "The", cult British TV series whose horn-heavy theme music was composed by Ron Grainer
2D
Obamacare, formally but concisely
3D
Put down in writing?
4D
Sundanese (Indonesian) musical instrument of bamboo tubes (played kind of like handbells) ("one ________" anagrams to "No Angle Gunk", if that helps) (I know it doesn't really help, sorry)
5D
1994 Nobel Laureate who shared the prize with Rabin
6D
Crew of 11A (some argue)
7D
Hence, ergo, or therefore
8D
With "The", lead guitarist of U2, born David Howell Evans
14D
Molecule that I have over 10 billion miles inside of me (!)