Does anyone know what the current 19K duty station openings are?

You're a SSG, you should be looking at broadening assignments at this point in your career if you're complete with your Squad Leader time.

Call the armor branch. They can give you all the openings, even the ones not at regular units.

There was a 19K Reserve Unit at Fort Campbell. You may want to check it out, as there may be some active connection there.