I hope these changes help! Keep us posted.
My saddle is all the way back on the rails AND I have a seatpost with a fair amount of setback, too. If you have long femurs and a zero setback seatpost, I wonder if you're still not back far enough. I, personally, like to be farther behind my bottom bracket than the standard knee-over-pedal-spindle rule of thumb would suggest. Personal preference I guess, but it makes my knees and hands happy.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher