3ds Max Animation :: Loop Animation - Distance Of Stripes Controlled By Curve

i need to do a loop animation of several stripes that starts at lets say 2units distance from each other, they separate slowly and by the end they have 15units separation, my problem is that each stripe is a separate object, so i offset their keyframes, but when i want to tweak the keys on curve editor they dont apply to the other copies. Any other way to do this simpler?

quick example on the image attached, real application on the video, video shows the animation(rendered sequential images of 1 loop then applied as texture) but with linear speed, so constant separation, i need to apply the above here, these dont only move on the X axis but on the Y aswell, while keeping the symmetry fixed on the center.

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