I had this problem for the first few months of this year, or since I took up cycling again. EVERY time I went riding, after about twenty minutes, I would be dealing with toe numbness on the outside. I thought it was something I would just have to learn to tolerate. During this time, I had also been working my way through the REI saddle selection trying to find something comfortable, and I finally did. And you know what? I was so busy rhapsodizing about how great my poor crotch felt that at first I didn't notice that the toe numbness was gone. It was the saddle, when I thought it was just me, seeing as I remember I always had toe numbness when I used to ride in my early twenties. So don't give up! It may be that one adjustment away!