Some v-brake levers can be adjusted for a shorter/stronger pull.
Depress the lever fully. See if the anchor point of the cable can be moved closer to the hinge of the lever. If it can, you're good.
A decent fabricator might even be able to unhook and move the anchor point of a non-adjustable brake lever. But I know I wouldn't be able to do it fast enough for it to make sense in a commercial situation.
Another option is to run a brake adapter called a "travel agent" in reverse.
Or simply to try the mismatch.
It'll give a bit less braking for a set amount of hand effort, but generally not an overwhelming difference.