Catan game box

I decided that the box Catan comes in is far too large. The one I have made was planned to be 4 levels printed on 3D printer and put into paper sleeve, however I have missmeasured the first time and printed it too small. Making it bigger and re-printing the entire thing would be too costly, so now I have one section bigger than others. I am thinking I will leave it that way, jus making a plastic cover for the 3 upper sections to unite the size instead of sleeve.