These are actually the correct scale. Well, this one is: https://www.shapeways.com/product/NJMKDKFF5/geminon-traveler-set-of-four?optionId=12584276 . A friend actually met some of the VFX people from the series and got the correct measurements for all of the ships straight from them, including peeks at the actual meshes. I didn't have access to those when I made these, of course, just his measurements. The thing was that they then often played fast and loose on the show, sometimes making the traveler bigger and clearly a small starship in its own right, other times a large shuttle capable of fitting inside a landing bay. So, while there is a canon set of measurements, the show tweaked and twisted those around quite a lot.
Shrinking it down is not a problem. The base CAD file is already 16ish mm in length so a drop to 14.6 mm wouldn't be a problem. Just one or a package of four?
Let me know.