To answer your question regarding trying different KOPS positions, I've tried up to maybe 2" behind KOPS to 1.5" in front. I've found that there are a few positions that work for me when combined with adjusting the saddle height, and I tinker with the setup during the course of the year and the type of ride. In other words, sometimes I'll move the saddle back and down, especially if I'm going to be doing some heavy climbing, front and up if on the flats and perhaps a shorter ride.

I'd agree with the others on your fit issues, though. Get your seat position down first, adjust your handlebar height up and/or back to get some pressure off your hands and arms.