Thanks, Karen - you are right - I would have loved to stick with Trek as I spent quite a lot of money on the trunk bag and panniers that work with the "Interchange" system - you just snap them on and go! Unfortunately, it just doesn't work well with this other bike.

The rack comes in two sizes, and I have the one for smaller frames. You can't really adjust the fore/aft position of a rack. It is dictated by the rack's design. The struts go up from the eyelets and there is only a small amount of variance in position if you want the rack to sit level. What I am looking for is a rack designed so that when you draw a vertical line straight up from where the rack attaches to the eyelets, the line intersects the flat part of the rack much closer to the front instead of the middle of the rack.

I was wondering about a rack that is meant for loaded touring. It seems they sit a bit further back to reduce the problem of the cyclist's heels hitting the panniers. It's hard to tell from pictures, though, so I was hoping someone else had run into this problem and had found a rack that worked well in this situation. I did check with the bike shop. My LBS is quite small and is the only one in town. They only carry a couple of racks, and none of them worked.