For those who are interested, I did some measuring and realized that there is now way to get the clamp to fit around bars that do not have a flared clamp area (i.e. the bars keep the 25.4mmm diameter all the way to the beginning of the rise). For those of you who have figured out a way to make 2.25" of metal stretch to 2.6", congratulations.
I emailed Wald, and they agreed that their current clamp won't fit, but that Swobo just ordered some baskets made that will fit 25.4mm bars. They ordered 100 of each style, but they have been made. Hopefully Wald will add it to their catalog soon.