We have added an updated clip to all sets. This new revision replaces all older clips released prior to March 1, 2017, and we recommend switching over to it as it is a big improvement over the older releases. PLEASE NOTE: nothing has changed with the terrain models themselves, just in the clip itself. This new design is the culmination of extended testing, it grips tighter than any of the previous versions, eliminating any play between parts when linked for a rock-solid build, and is still easy to insert and remove without over stressing the clip. You can download the new clip here for free: