Dual 18650 Battery Sled

I made this for a project of mine. But I don't have a 3D printer. And when I get access to one I don't want to waste filament, because I am not 100% sure on well this fits the battery. Anyway I was hoping someone with some extra time, and filament on their hands could print this out and tell me how well it works out for you. And if it has any problems go ahead and leave a comment telling me what I can fix on it.

I made it using Autodesk Inventor.