I have narrow feet (B-ish), but also a low instep. I run into problems because if I go narrow enough to get decent snugness across the top of the arch, the toe area is too narrow and my pinky toe pays the price. Alternatively, if I stay wide enough for the toes, its too loose elsewhere. This varies between lasts, but it seems pretty universal in what I've tried so far. Any suggestions? I can use tongue pads which helps a bit, just looking for other opinions.