You might put your saddle back on the middle of the rails and try that for a while. Sometimes setback and balancing in the saddle don't help what you think they'll help. To me, it's really more about how you balance over the BB when putting out the normal power you develop for most of your ride.
And do you tend to ride on the hoods all the time? Maybe some bars with a shallower drop will encourage you to change hand positions more often.