Chip thickness variation is a fact of life with Burt Co./ASM/CPC chips. It varies between molds, colors, and diameters, and probably also varies between when/how/by-whom the base slug clay sheets were created/rolled, as well as differing production runs and corresponding seasonal temperatures. And likely changes as the molds wear out, or when the exact temperatures/pressures used during production vary.
Trying to create a single storage product that will fit all of those variables will only result in an ill-fitting rack when used for most applications (i.e., too big).
