Kommisar89:
Here is a pic of my 520 with a B17 on it. Ignore the stem setup except for the height relative to the peak of the saddle. Look at the tilt of the saddle. If you compare the horizontal lines of the top-tube, you'll see the the web area of the saddle is what is level, with the peak allowed to be at whatever angle it happens to stop at. I adjust the bars relative to that setting.

In your case, from the pic, you can tilt the saddle up some more, and maybe tension it to get some of the hammock out of it. Also, I recommend that you try a longish ride with the saddle moved forward a tad, to get the peak forward of your perineal area. Your ischials should rotate back onto the web a little better that way - kind of like tucking your tail down.

The main problem I see is exactly as you surmise - a bar setup that is too low for a B17 type. It's causing you to lay over a saddle that is not designed to lay over.

http://i28.tinypic.com/2gtdzes.jpg