Turns out, you have to unbolt the jointer from the base and flip it on its side to be able to access the inner screws holding the tables down.
The next issue was trying to remove the spring that makes raising the tables easier. Its basically impossible to remove the spring while under tension. You have to remove the tables as best you can and position it so that it will release the tension on the springs. After that its easy to use some pliers to get the spring off.
Here's a pic with the tables off. It took some time to remove the eccentric bushings used to level the tables. You have to remember to remove the 2 set screws for each bushing (one stacked on top of another). Removing them gives you a nice port for squirting a little WD40 to help loosen the bushing. Then I used a 19mm socket and a rubber mallet to tap the bushings out.