melissam,
I switch between the brake hoods and the ends of the handlebars. I've had the seat farther back, and I have noticed that I have to scoot my butt back as far as it will go to make my legs comfortable. After I bought the Brooks saddle I was stopping a lot to adjust its position. It seems like I've tried a lot micro-adjusting.

Yeah, exercise... (blank stare into the computer screen) I'm looking into that, too.