I made another attempt at reversal processing yesterday and I'm getting closer.
After following Allesandro's instructions re: bleaching, I ended up with NO IMAGES again BUT at least there were dark borders, which is much better than the first time.
I would like to narrow down where I went wrong. here are a few guesses:

1) over agitating the bleach? (continuous inverting back and forth for 5 minutes)
2) not enough second exposure (10 cm under flourescent bulb under water on spiral reel and in patterson developing tank)
3) didn't use hardner in fix.

The dark border along the sprocket holes was dark but not fully black which leads me to believe that the film was not exposed long enough for the second exposure or it was over bleached and, therefore, there was nothing left to re-expose?