10-30 it is!!!
Everything is back together, but I don't feel like fighting the Black Friday crowds to get a few quarts of oil and ATF, so the test drive will have to wait until we get back from camping this weekend.
While pouring the used ATF and oil from the drain pan to a jug, I found this little guy (in the oil). I'm assuming it came from the transmission, and it looks like a detent ball. I pulled the three detent plugs from the passenger side and all three have their springs and detent balls like they are supposed to. Any idea where else this might have came from?