Melitta single cup pour through adapter

I have a Melitta single cup pour through that holds a Melitta #2 cone filter. I have a Contigo cup that the locating ring on the filter holder is the same diameter of the cup rim so it does not set on it very stable. So I made this adapter that accommodates the different diameters and makes it stable. I included the Fusion 360 file in case anyone wants to adjust it for their sizes.