I created a new torrent in 1.83, and gave the file manually to others. No one could download from it. I took a look at the file from utorrent, and it was trying to get peers from my second tracker in the list, which happened to be a backup tracker. Since transmission wasn't using the second tracker at all unless the first was not working, no one could connect.
After making all the trackers primary and not 1 primary and two backup, my client could connect immediately.
Any thoughts?