Need some help 3d modeling a custom 8mm holder for easy35

Hi Everyone!

As an almost final step in my at-home setup, I am looking for someone to help me with STL modeling to 3D print a part for my scanner.

I need a part that would fit as a film holder in the easy35, but that would carry 8mm film. All the external dimensions should be the same as the other holders as pictured below, but would fit 8mm film!

Could anyone on here help me! Or point me in the direction of someone who can?

Thanks!

Grace